Home / 686,521.20-1,029,781.80-461,989.20

Finding the Fourth Proportional to 686,521.20, 1,029,781.80 and 461,989.20

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Solution

The fourth proportional to 686,521.20, 1,029,781.80 and 461,989.20 is: 692,983.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,521.20 : 1,029,781.80 = 461,989.20 : x
  2. Step 2: Convert to fraction form
    686,521.20/1,029,781.80 = 461,989.20/x
  3. Step 3: Cross multiply
    686,521.20x = 1,029,781.80 × 461,989.20
  4. Step 4: Simplify right side
    686,521.20x = 475,748,069,956.56
  5. Step 5: Solve for x
    x = 475,748,069,956.56/686,521.20
  6. Step 6: Final answer
    x = 692,983.80

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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.