Home / 684,447.12-944,543.30-378,507.70

Finding the Fourth Proportional to 684,447.12, 944,543.30 and 378,507.70

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Solution

The fourth proportional to 684,447.12, 944,543.30 and 378,507.70 is: 522,344.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,447.12 : 944,543.30 = 378,507.70 : x
  2. Step 2: Convert to fraction form
    684,447.12/944,543.30 = 378,507.70/x
  3. Step 3: Cross multiply
    684,447.12x = 944,543.30 × 378,507.70
  4. Step 4: Simplify right side
    684,447.12x = 357,516,912,033.41
  5. Step 5: Solve for x
    x = 357,516,912,033.41/684,447.12
  6. Step 6: Final answer
    x = 522,344.10

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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.