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Finding the Fourth Proportional to 765,718.74, 1,056,673.89 and 426,179.70

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Solution

The fourth proportional to 765,718.74, 1,056,673.89 and 426,179.70 is: 588,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,718.74 : 1,056,673.89 = 426,179.70 : x
  2. Step 2: Convert to fraction form
    765,718.74/1,056,673.89 = 426,179.70/x
  3. Step 3: Cross multiply
    765,718.74x = 1,056,673.89 × 426,179.70
  4. Step 4: Simplify right side
    765,718.74x = 450,332,961,438.03
  5. Step 5: Solve for x
    x = 450,332,961,438.03/765,718.74
  6. Step 6: Final answer
    x = 588,117.98

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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.