Home / 644,088.58-887,380.14-498,393.43

Finding the Fourth Proportional to 644,088.58, 887,380.14 and 498,393.43

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Solution

The fourth proportional to 644,088.58, 887,380.14 and 498,393.43 is: 686,651.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,088.58 : 887,380.14 = 498,393.43 : x
  2. Step 2: Convert to fraction form
    644,088.58/887,380.14 = 498,393.43/x
  3. Step 3: Cross multiply
    644,088.58x = 887,380.14 × 498,393.43
  4. Step 4: Simplify right side
    644,088.58x = 442,264,431,688.48
  5. Step 5: Solve for x
    x = 442,264,431,688.48/644,088.58
  6. Step 6: Final answer
    x = 686,651.57

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Double scale
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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.