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Finding the Fourth Proportional to 676,070, 932,987.60 and 370,141.28

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Solution

The fourth proportional to 676,070, 932,987.60 and 370,141.28 is: 510,800.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,070 : 932,987.60 = 370,141.28 : x
  2. Step 2: Convert to fraction form
    676,070/932,987.60 = 370,141.28/x
  3. Step 3: Cross multiply
    676,070x = 932,987.60 × 370,141.28
  4. Step 4: Simplify right side
    676,070x = 345,337,224,488.13
  5. Step 5: Solve for x
    x = 345,337,224,488.13/676,070
  6. Step 6: Final answer
    x = 510,800.99

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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.