Home / 715,035.13-986,755.60-388,354.52

Finding the Fourth Proportional to 715,035.13, 986,755.60 and 388,354.52

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Solution

The fourth proportional to 715,035.13, 986,755.60 and 388,354.52 is: 535,933.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,035.13 : 986,755.60 = 388,354.52 : x
  2. Step 2: Convert to fraction form
    715,035.13/986,755.60 = 388,354.52/x
  3. Step 3: Cross multiply
    715,035.13x = 986,755.60 × 388,354.52
  4. Step 4: Simplify right side
    715,035.13x = 383,210,997,395.31
  5. Step 5: Solve for x
    x = 383,210,997,395.31/715,035.13
  6. Step 6: Final answer
    x = 535,933.10

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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.