Home / 1,174,121,299.84-1,620,288,436.20-645,494,279.92

Finding the Fourth Proportional to 1,174,121,299.84, 1,620,288,436.20 and 645,494,279.92

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Solution

The fourth proportional to 1,174,121,299.84, 1,620,288,436.20 and 645,494,279.92 is: 890,782,679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,121,299.84 : 1,620,288,436.20 = 645,494,279.92 : x
  2. Step 2: Convert to fraction form
    1,174,121,299.84/1,620,288,436.20 = 645,494,279.92/x
  3. Step 3: Cross multiply
    1,174,121,299.84x = 1,620,288,436.20 × 645,494,279.92
  4. Step 4: Simplify right side
    1,174,121,299.84x = 1,045,886,917,387,621,760
  5. Step 5: Solve for x
    x = 1,045,886,917,387,621,760/1,174,121,299.84
  6. Step 6: Final answer
    x = 890,782,679.38

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Double scale
Find fourth proportional to 1,174,121,300.84, 1,620,288,437.58 and 645,494,280.92
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.