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Finding the Fourth Proportional to 579,497.20, 869,245.80 and 549,972.70

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Solution

The fourth proportional to 579,497.20, 869,245.80 and 549,972.70 is: 824,959.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,497.20 : 869,245.80 = 549,972.70 : x
  2. Step 2: Convert to fraction form
    579,497.20/869,245.80 = 549,972.70/x
  3. Step 3: Cross multiply
    579,497.20x = 869,245.80 × 549,972.70
  4. Step 4: Simplify right side
    579,497.20x = 478,061,459,589.66
  5. Step 5: Solve for x
    x = 478,061,459,589.66/579,497.20
  6. Step 6: Final answer
    x = 824,959.05

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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.