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Finding the Fourth Proportional to 615,530.80, 849,816.53 and 397,853.43

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Solution

The fourth proportional to 615,530.80, 849,816.53 and 397,853.43 is: 549,285.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,530.80 : 849,816.53 = 397,853.43 : x
  2. Step 2: Convert to fraction form
    615,530.80/849,816.53 = 397,853.43/x
  3. Step 3: Cross multiply
    615,530.80x = 849,816.53 × 397,853.43
  4. Step 4: Simplify right side
    615,530.80x = 338,102,421,331.20
  5. Step 5: Solve for x
    x = 338,102,421,331.20/615,530.80
  6. Step 6: Final answer
    x = 549,285.95

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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.