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Finding the Fourth Proportional to 602,767.20, 905,187.60 and 426,511.20

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Solution

The fourth proportional to 602,767.20, 905,187.60 and 426,511.20 is: 640,500.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,767.20 : 905,187.60 = 426,511.20 : x
  2. Step 2: Convert to fraction form
    602,767.20/905,187.60 = 426,511.20/x
  3. Step 3: Cross multiply
    602,767.20x = 905,187.60 × 426,511.20
  4. Step 4: Simplify right side
    602,767.20x = 386,072,649,501.12
  5. Step 5: Solve for x
    x = 386,072,649,501.12/602,767.20
  6. Step 6: Final answer
    x = 640,500.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.