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Finding the Fourth Proportional to 615,816.61, 849,818.89 and 343,889.28

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Solution

The fourth proportional to 615,816.61, 849,818.89 and 343,889.28 is: 474,562.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,816.61 : 849,818.89 = 343,889.28 : x
  2. Step 2: Convert to fraction form
    615,816.61/849,818.89 = 343,889.28/x
  3. Step 3: Cross multiply
    615,816.61x = 849,818.89 × 343,889.28
  4. Step 4: Simplify right side
    615,816.61x = 292,243,606,642.36
  5. Step 5: Solve for x
    x = 292,243,606,642.36/615,816.61
  6. Step 6: Final answer
    x = 474,562.72

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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.