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Finding the Fourth Proportional to 634,019.28, 875,036.10 and 392,379.66

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Solution

The fourth proportional to 634,019.28, 875,036.10 and 392,379.66 is: 541,539.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,019.28 : 875,036.10 = 392,379.66 : x
  2. Step 2: Convert to fraction form
    634,019.28/875,036.10 = 392,379.66/x
  3. Step 3: Cross multiply
    634,019.28x = 875,036.10 × 392,379.66
  4. Step 4: Simplify right side
    634,019.28x = 343,346,367,405.73
  5. Step 5: Solve for x
    x = 343,346,367,405.73/634,019.28
  6. Step 6: Final answer
    x = 541,539.32

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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.