Home / 715,294.87-987,980.19-534,807.23

Finding the Fourth Proportional to 715,294.87, 987,980.19 and 534,807.23

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Solution

The fourth proportional to 715,294.87, 987,980.19 and 534,807.23 is: 738,686.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,294.87 : 987,980.19 = 534,807.23 : x
  2. Step 2: Convert to fraction form
    715,294.87/987,980.19 = 534,807.23/x
  3. Step 3: Cross multiply
    715,294.87x = 987,980.19 × 534,807.23
  4. Step 4: Simplify right side
    715,294.87x = 528,378,948,708.77
  5. Step 5: Solve for x
    x = 528,378,948,708.77/715,294.87
  6. Step 6: Final answer
    x = 738,686.90

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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.