Home / 1,174,121,307.92-1,620,288,447.24-645,494,287.92

Finding the Fourth Proportional to 1,174,121,307.92, 1,620,288,447.24 and 645,494,287.92

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Solution

The fourth proportional to 1,174,121,307.92, 1,620,288,447.24 and 645,494,287.92 is: 890,782,690.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,121,307.92 : 1,620,288,447.24 = 645,494,287.92 : x
  2. Step 2: Convert to fraction form
    1,174,121,307.92/1,620,288,447.24 = 645,494,287.92/x
  3. Step 3: Cross multiply
    1,174,121,307.92x = 1,620,288,447.24 × 645,494,287.92
  4. Step 4: Simplify right side
    1,174,121,307.92x = 1,045,886,937,476,186,240
  5. Step 5: Solve for x
    x = 1,045,886,937,476,186,240/1,174,121,307.92
  6. Step 6: Final answer
    x = 890,782,690.36

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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.