Home / 985,574.86-1,478,374.13-386,818.00

Finding the Fourth Proportional to 985,574.86, 1,478,374.13 and 386,818.00

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Solution

The fourth proportional to 985,574.86, 1,478,374.13 and 386,818.00 is: 580,231.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,574.86 : 1,478,374.13 = 386,818.00 : x
  2. Step 2: Convert to fraction form
    985,574.86/1,478,374.13 = 386,818.00/x
  3. Step 3: Cross multiply
    985,574.86x = 1,478,374.13 × 386,818.00
  4. Step 4: Simplify right side
    985,574.86x = 571,861,721,489.45
  5. Step 5: Solve for x
    x = 571,861,721,489.45/985,574.86
  6. Step 6: Final answer
    x = 580,231.65

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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.