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Finding the Fourth Proportional to 615,703.12, 849,661.98 and 343,775.20

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Solution

The fourth proportional to 615,703.12, 849,661.98 and 343,775.20 is: 474,405.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,703.12 : 849,661.98 = 343,775.20 : x
  2. Step 2: Convert to fraction form
    615,703.12/849,661.98 = 343,775.20/x
  3. Step 3: Cross multiply
    615,703.12x = 849,661.98 × 343,775.20
  4. Step 4: Simplify right side
    615,703.12x = 292,092,717,106.90
  5. Step 5: Solve for x
    x = 292,092,717,106.90/615,703.12
  6. Step 6: Final answer
    x = 474,405.13

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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.