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Finding the Fourth Proportional to 581,909.92, 802,579.74 and 398,257.12

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Solution

The fourth proportional to 581,909.92, 802,579.74 and 398,257.12 is: 549,282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,909.92 : 802,579.74 = 398,257.12 : x
  2. Step 2: Convert to fraction form
    581,909.92/802,579.74 = 398,257.12/x
  3. Step 3: Cross multiply
    581,909.92x = 802,579.74 × 398,257.12
  4. Step 4: Simplify right side
    581,909.92x = 319,633,095,822.75
  5. Step 5: Solve for x
    x = 319,633,095,822.75/581,909.92
  6. Step 6: Final answer
    x = 549,282.78

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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.