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Finding the Fourth Proportional to 630,270.80, 869,752.20 and 375,617.36

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Solution

The fourth proportional to 630,270.80, 869,752.20 and 375,617.36 is: 518,339.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,270.80 : 869,752.20 = 375,617.36 : x
  2. Step 2: Convert to fraction form
    630,270.80/869,752.20 = 375,617.36/x
  3. Step 3: Cross multiply
    630,270.80x = 869,752.20 × 375,617.36
  4. Step 4: Simplify right side
    630,270.80x = 326,694,025,218.19
  5. Step 5: Solve for x
    x = 326,694,025,218.19/630,270.80
  6. Step 6: Final answer
    x = 518,339.14

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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.