Home / 818,737.20-1,228,105.80-458,538.30

Finding the Fourth Proportional to 818,737.20, 1,228,105.80 and 458,538.30

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Solution

The fourth proportional to 818,737.20, 1,228,105.80 and 458,538.30 is: 687,807.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,737.20 : 1,228,105.80 = 458,538.30 : x
  2. Step 2: Convert to fraction form
    818,737.20/1,228,105.80 = 458,538.30/x
  3. Step 3: Cross multiply
    818,737.20x = 1,228,105.80 × 458,538.30
  4. Step 4: Simplify right side
    818,737.20x = 563,133,545,752.14
  5. Step 5: Solve for x
    x = 563,133,545,752.14/818,737.20
  6. Step 6: Final answer
    x = 687,807.45

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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.