Home / 678,275.75-936,024.18-423,774.56

Finding the Fourth Proportional to 678,275.75, 936,024.18 and 423,774.56

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Solution

The fourth proportional to 678,275.75, 936,024.18 and 423,774.56 is: 584,811.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,275.75 : 936,024.18 = 423,774.56 : x
  2. Step 2: Convert to fraction form
    678,275.75/936,024.18 = 423,774.56/x
  3. Step 3: Cross multiply
    678,275.75x = 936,024.18 × 423,774.56
  4. Step 4: Simplify right side
    678,275.75x = 396,663,235,028.86
  5. Step 5: Solve for x
    x = 396,663,235,028.86/678,275.75
  6. Step 6: Final answer
    x = 584,811.17

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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.