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Finding the Fourth Proportional to 576,494.40, 865,000.80 and 260,788.80

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Solution

The fourth proportional to 576,494.40, 865,000.80 and 260,788.80 is: 391,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,494.40 : 865,000.80 = 260,788.80 : x
  2. Step 2: Convert to fraction form
    576,494.40/865,000.80 = 260,788.80/x
  3. Step 3: Cross multiply
    576,494.40x = 865,000.80 × 260,788.80
  4. Step 4: Simplify right side
    576,494.40x = 225,582,520,631.04
  5. Step 5: Solve for x
    x = 225,582,520,631.04/576,494.40
  6. Step 6: Final answer
    x = 391,300.45

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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.