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Finding the Fourth Proportional to 657,681.63, 907,752.33 and 385,836.87

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Solution

The fourth proportional to 657,681.63, 907,752.33 and 385,836.87 is: 532,543.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,681.63 : 907,752.33 = 385,836.87 : x
  2. Step 2: Convert to fraction form
    657,681.63/907,752.33 = 385,836.87/x
  3. Step 3: Cross multiply
    657,681.63x = 907,752.33 × 385,836.87
  4. Step 4: Simplify right side
    657,681.63x = 350,244,317,742.41
  5. Step 5: Solve for x
    x = 350,244,317,742.41/657,681.63
  6. Step 6: Final answer
    x = 532,543.87

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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.