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Finding the Fourth Proportional to 615,860.60, 849,871.02 and 343,920.92

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Solution

The fourth proportional to 615,860.60, 849,871.02 and 343,920.92 is: 474,601.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,860.60 : 849,871.02 = 343,920.92 : x
  2. Step 2: Convert to fraction form
    615,860.60/849,871.02 = 343,920.92/x
  3. Step 3: Cross multiply
    615,860.60x = 849,871.02 × 343,920.92
  4. Step 4: Simplify right side
    615,860.60x = 292,288,423,079.74
  5. Step 5: Solve for x
    x = 292,288,423,079.74/615,860.60
  6. Step 6: Final answer
    x = 474,601.60

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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.