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Finding the Fourth Proportional to 723,335.40, 1,085,003.10 and 686,471.40

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Solution

The fourth proportional to 723,335.40, 1,085,003.10 and 686,471.40 is: 1,029,707.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,335.40 : 1,085,003.10 = 686,471.40 : x
  2. Step 2: Convert to fraction form
    723,335.40/1,085,003.10 = 686,471.40/x
  3. Step 3: Cross multiply
    723,335.40x = 1,085,003.10 × 686,471.40
  4. Step 4: Simplify right side
    723,335.40x = 744,823,597,061.34
  5. Step 5: Solve for x
    x = 744,823,597,061.34/723,335.40
  6. Step 6: Final answer
    x = 1,029,707.10

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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.