Home / 811,753.60-1,120,089.12-509,733.76

Finding the Fourth Proportional to 811,753.60, 1,120,089.12 and 509,733.76

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Solution

The fourth proportional to 811,753.60, 1,120,089.12 and 509,733.76 is: 703,350.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,753.60 : 1,120,089.12 = 509,733.76 : x
  2. Step 2: Convert to fraction form
    811,753.60/1,120,089.12 = 509,733.76/x
  3. Step 3: Cross multiply
    811,753.60x = 1,120,089.12 × 509,733.76
  4. Step 4: Simplify right side
    811,753.60x = 570,947,238,672.69
  5. Step 5: Solve for x
    x = 570,947,238,672.69/811,753.60
  6. Step 6: Final answer
    x = 703,350.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.