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Finding the Fourth Proportional to 615,937.50, 849,909.78 and 343,970.64

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Solution

The fourth proportional to 615,937.50, 849,909.78 and 343,970.64 is: 474,632.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,937.50 : 849,909.78 = 343,970.64 : x
  2. Step 2: Convert to fraction form
    615,937.50/849,909.78 = 343,970.64/x
  3. Step 3: Cross multiply
    615,937.50x = 849,909.78 × 343,970.64
  4. Step 4: Simplify right side
    615,937.50x = 292,344,010,968.86
  5. Step 5: Solve for x
    x = 292,344,010,968.86/615,937.50
  6. Step 6: Final answer
    x = 474,632.59

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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.