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Finding the Fourth Proportional to 910,767, 1,256,859.18 and 508,359

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Solution

The fourth proportional to 910,767, 1,256,859.18 and 508,359 is: 701,535.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,767 : 1,256,859.18 = 508,359 : x
  2. Step 2: Convert to fraction form
    910,767/1,256,859.18 = 508,359/x
  3. Step 3: Cross multiply
    910,767x = 1,256,859.18 × 508,359
  4. Step 4: Simplify right side
    910,767x = 638,935,675,885.62
  5. Step 5: Solve for x
    x = 638,935,675,885.62/910,767
  6. Step 6: Final answer
    x = 701,535.82

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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.