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Finding the Fourth Proportional to 615,720.98, 849,747.48 and 343,841.40

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Solution

The fourth proportional to 615,720.98, 849,747.48 and 343,841.40 is: 474,530.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,720.98 : 849,747.48 = 343,841.40 : x
  2. Step 2: Convert to fraction form
    615,720.98/849,747.48 = 343,841.40/x
  3. Step 3: Cross multiply
    615,720.98x = 849,747.48 × 343,841.40
  4. Step 4: Simplify right side
    615,720.98x = 292,178,361,880.27
  5. Step 5: Solve for x
    x = 292,178,361,880.27/615,720.98
  6. Step 6: Final answer
    x = 474,530.46

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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.