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Finding the Fourth Proportional to 615,860.88, 849,871.44 and 343,921.20

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Solution

The fourth proportional to 615,860.88, 849,871.44 and 343,921.20 is: 474,602.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,860.88 : 849,871.44 = 343,921.20 : x
  2. Step 2: Convert to fraction form
    615,860.88/849,871.44 = 343,921.20/x
  3. Step 3: Cross multiply
    615,860.88x = 849,871.44 × 343,921.20
  4. Step 4: Simplify right side
    615,860.88x = 292,288,805,490.53
  5. Step 5: Solve for x
    x = 292,288,805,490.53/615,860.88
  6. Step 6: Final answer
    x = 474,602.00

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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.