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Finding the Fourth Proportional to 513,397.89, 773,562.68 and 425,398.94

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Solution

The fourth proportional to 513,397.89, 773,562.68 and 425,398.94 is: 640,970.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,397.89 : 773,562.68 = 425,398.94 : x
  2. Step 2: Convert to fraction form
    513,397.89/773,562.68 = 425,398.94/x
  3. Step 3: Cross multiply
    513,397.89x = 773,562.68 × 425,398.94
  4. Step 4: Simplify right side
    513,397.89x = 329,072,738,898.37
  5. Step 5: Solve for x
    x = 329,072,738,898.37/513,397.89
  6. Step 6: Final answer
    x = 640,970.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.