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Finding the Fourth Proportional to 712,272.60, 983,030.13 and 406,278.90

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Solution

The fourth proportional to 712,272.60, 983,030.13 and 406,278.90 is: 560,718.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,272.60 : 983,030.13 = 406,278.90 : x
  2. Step 2: Convert to fraction form
    712,272.60/983,030.13 = 406,278.90/x
  3. Step 3: Cross multiply
    712,272.60x = 983,030.13 × 406,278.90
  4. Step 4: Simplify right side
    712,272.60x = 399,384,399,883.26
  5. Step 5: Solve for x
    x = 399,384,399,883.26/712,272.60
  6. Step 6: Final answer
    x = 560,718.47

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Similar ratio
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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.