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Finding the Fourth Proportional to 520,673.76, 718,902.18 and 406,080.39

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Solution

The fourth proportional to 520,673.76, 718,902.18 and 406,080.39 is: 560,681.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,673.76 : 718,902.18 = 406,080.39 : x
  2. Step 2: Convert to fraction form
    520,673.76/718,902.18 = 406,080.39/x
  3. Step 3: Cross multiply
    520,673.76x = 718,902.18 × 406,080.39
  4. Step 4: Simplify right side
    520,673.76x = 291,932,077,626.25
  5. Step 5: Solve for x
    x = 291,932,077,626.25/520,673.76
  6. Step 6: Final answer
    x = 560,681.37

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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.