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Finding the Fourth Proportional to 828,843.40, 1,243,265.10 and 473,893.30

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Solution

The fourth proportional to 828,843.40, 1,243,265.10 and 473,893.30 is: 710,839.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,843.40 : 1,243,265.10 = 473,893.30 : x
  2. Step 2: Convert to fraction form
    828,843.40/1,243,265.10 = 473,893.30/x
  3. Step 3: Cross multiply
    828,843.40x = 1,243,265.10 × 473,893.30
  4. Step 4: Simplify right side
    828,843.40x = 589,175,001,013.83
  5. Step 5: Solve for x
    x = 589,175,001,013.83/828,843.40
  6. Step 6: Final answer
    x = 710,839.95

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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.