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Finding the Fourth Proportional to 910,959, 1,257,123.51 and 508,551

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Solution

The fourth proportional to 910,959, 1,257,123.51 and 508,551 is: 701,800.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,959 : 1,257,123.51 = 508,551 : x
  2. Step 2: Convert to fraction form
    910,959/1,257,123.51 = 508,551/x
  3. Step 3: Cross multiply
    910,959x = 1,257,123.51 × 508,551
  4. Step 4: Simplify right side
    910,959x = 639,311,418,134.01
  5. Step 5: Solve for x
    x = 639,311,418,134.01/910,959
  6. Step 6: Final answer
    x = 701,800.43

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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.