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Finding the Fourth Proportional to 578,067.07, 865,978.44 and 425,988.10

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Solution

The fourth proportional to 578,067.07, 865,978.44 and 425,988.10 is: 638,155.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,067.07 : 865,978.44 = 425,988.10 : x
  2. Step 2: Convert to fraction form
    578,067.07/865,978.44 = 425,988.10/x
  3. Step 3: Cross multiply
    578,067.07x = 865,978.44 × 425,988.10
  4. Step 4: Simplify right side
    578,067.07x = 368,896,510,296.56
  5. Step 5: Solve for x
    x = 368,896,510,296.56/578,067.07
  6. Step 6: Final answer
    x = 638,155.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.