Home / 687,944.69-949,294.38-401,630.86

Finding the Fourth Proportional to 687,944.69, 949,294.38 and 401,630.86

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Solution

The fourth proportional to 687,944.69, 949,294.38 and 401,630.86 is: 554,210.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,944.69 : 949,294.38 = 401,630.86 : x
  2. Step 2: Convert to fraction form
    687,944.69/949,294.38 = 401,630.86/x
  3. Step 3: Cross multiply
    687,944.69x = 949,294.38 × 401,630.86
  4. Step 4: Simplify right side
    687,944.69x = 381,265,915,585.52
  5. Step 5: Solve for x
    x = 381,265,915,585.52/687,944.69
  6. Step 6: Final answer
    x = 554,210.13

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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.