Home / 723,207.40-1,084,811.10-686,343.40

Finding the Fourth Proportional to 723,207.40, 1,084,811.10 and 686,343.40

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Solution

The fourth proportional to 723,207.40, 1,084,811.10 and 686,343.40 is: 1,029,515.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,207.40 : 1,084,811.10 = 686,343.40 : x
  2. Step 2: Convert to fraction form
    723,207.40/1,084,811.10 = 686,343.40/x
  3. Step 3: Cross multiply
    723,207.40x = 1,084,811.10 × 686,343.40
  4. Step 4: Simplify right side
    723,207.40x = 744,552,938,731.74
  5. Step 5: Solve for x
    x = 744,552,938,731.74/723,207.40
  6. Step 6: Final answer
    x = 1,029,515.10

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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.