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Finding the Fourth Proportional to 518,541.60, 777,812.40 and 487,048.80

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Solution

The fourth proportional to 518,541.60, 777,812.40 and 487,048.80 is: 730,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,541.60 : 777,812.40 = 487,048.80 : x
  2. Step 2: Convert to fraction form
    518,541.60/777,812.40 = 487,048.80/x
  3. Step 3: Cross multiply
    518,541.60x = 777,812.40 × 487,048.80
  4. Step 4: Simplify right side
    518,541.60x = 378,832,596,045.12
  5. Step 5: Solve for x
    x = 378,832,596,045.12/518,541.60
  6. Step 6: Final answer
    x = 730,573.20

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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.