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Finding the Fourth Proportional to 549,276.70, 823,223.85 and 487,068.70

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Solution

The fourth proportional to 549,276.70, 823,223.85 and 487,068.70 is: 729,990.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,276.70 : 823,223.85 = 487,068.70 : x
  2. Step 2: Convert to fraction form
    549,276.70/823,223.85 = 487,068.70/x
  3. Step 3: Cross multiply
    549,276.70x = 823,223.85 × 487,068.70
  4. Step 4: Simplify right side
    549,276.70x = 400,966,570,428.50
  5. Step 5: Solve for x
    x = 400,966,570,428.50/549,276.70
  6. Step 6: Final answer
    x = 729,990.13

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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.