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Finding the Fourth Proportional to 715,089.67, 986,582.84 and 404,949.78

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Solution

The fourth proportional to 715,089.67, 986,582.84 and 404,949.78 is: 558,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,089.67 : 986,582.84 = 404,949.78 : x
  2. Step 2: Convert to fraction form
    715,089.67/986,582.84 = 404,949.78/x
  3. Step 3: Cross multiply
    715,089.67x = 986,582.84 × 404,949.78
  4. Step 4: Simplify right side
    715,089.67x = 399,516,501,985.03
  5. Step 5: Solve for x
    x = 399,516,501,985.03/715,089.67
  6. Step 6: Final answer
    x = 558,694.27

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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.