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Finding the Fourth Proportional to 615,743.80, 923,615.70 and 403,167.40

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Solution

The fourth proportional to 615,743.80, 923,615.70 and 403,167.40 is: 604,751.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,743.80 : 923,615.70 = 403,167.40 : x
  2. Step 2: Convert to fraction form
    615,743.80/923,615.70 = 403,167.40/x
  3. Step 3: Cross multiply
    615,743.80x = 923,615.70 × 403,167.40
  4. Step 4: Simplify right side
    615,743.80x = 372,371,740,368.18
  5. Step 5: Solve for x
    x = 372,371,740,368.18/615,743.80
  6. Step 6: Final answer
    x = 604,751.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.