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Finding the Fourth Proportional to 578,059.68, 865,967.38 and 425,980.70

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Solution

The fourth proportional to 578,059.68, 865,967.38 and 425,980.70 is: 638,144.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,059.68 : 865,967.38 = 425,980.70 : x
  2. Step 2: Convert to fraction form
    578,059.68/865,967.38 = 425,980.70/x
  3. Step 3: Cross multiply
    578,059.68x = 865,967.38 × 425,980.70
  4. Step 4: Simplify right side
    578,059.68x = 368,885,390,709.57
  5. Step 5: Solve for x
    x = 368,885,390,709.57/578,059.68
  6. Step 6: Final answer
    x = 638,144.13

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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.