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Finding the Fourth Proportional to 543,681.10, 815,521.65 and 403,713.10

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Solution

The fourth proportional to 543,681.10, 815,521.65 and 403,713.10 is: 605,569.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,681.10 : 815,521.65 = 403,713.10 : x
  2. Step 2: Convert to fraction form
    543,681.10/815,521.65 = 403,713.10/x
  3. Step 3: Cross multiply
    543,681.10x = 815,521.65 × 403,713.10
  4. Step 4: Simplify right side
    543,681.10x = 329,236,773,438.62
  5. Step 5: Solve for x
    x = 329,236,773,438.62/543,681.10
  6. Step 6: Final answer
    x = 605,569.65

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Double scale
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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.