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Finding the Fourth Proportional to 870,604.14, 1,201,438.80 and 483,425.04

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Solution

The fourth proportional to 870,604.14, 1,201,438.80 and 483,425.04 is: 667,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,604.14 : 1,201,438.80 = 483,425.04 : x
  2. Step 2: Convert to fraction form
    870,604.14/1,201,438.80 = 483,425.04/x
  3. Step 3: Cross multiply
    870,604.14x = 1,201,438.80 × 483,425.04
  4. Step 4: Simplify right side
    870,604.14x = 580,805,599,947.55
  5. Step 5: Solve for x
    x = 580,805,599,947.55/870,604.14
  6. Step 6: Final answer
    x = 667,129.38

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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.