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Finding the Fourth Proportional to 674,264.67, 930,513.62 and 387,785.08

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Solution

The fourth proportional to 674,264.67, 930,513.62 and 387,785.08 is: 535,159.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,264.67 : 930,513.62 = 387,785.08 : x
  2. Step 2: Convert to fraction form
    674,264.67/930,513.62 = 387,785.08/x
  3. Step 3: Cross multiply
    674,264.67x = 930,513.62 × 387,785.08
  4. Step 4: Simplify right side
    674,264.67x = 360,839,298,572.79
  5. Step 5: Solve for x
    x = 360,839,298,572.79/674,264.67
  6. Step 6: Final answer
    x = 535,159.73

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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.