Home / 763,552.40-1,145,328.60-687,444.80

Finding the Fourth Proportional to 763,552.40, 1,145,328.60 and 687,444.80

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Solution

The fourth proportional to 763,552.40, 1,145,328.60 and 687,444.80 is: 1,031,167.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,552.40 : 1,145,328.60 = 687,444.80 : x
  2. Step 2: Convert to fraction form
    763,552.40/1,145,328.60 = 687,444.80/x
  3. Step 3: Cross multiply
    763,552.40x = 1,145,328.60 × 687,444.80
  4. Step 4: Simplify right side
    763,552.40x = 787,350,190,361.28
  5. Step 5: Solve for x
    x = 787,350,190,361.28/763,552.40
  6. Step 6: Final answer
    x = 1,031,167.20

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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.