Home / 813,012.18-1,121,864.34-450,345.61

Finding the Fourth Proportional to 813,012.18, 1,121,864.34 and 450,345.61

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Solution

The fourth proportional to 813,012.18, 1,121,864.34 and 450,345.61 is: 621,425.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,012.18 : 1,121,864.34 = 450,345.61 : x
  2. Step 2: Convert to fraction form
    813,012.18/1,121,864.34 = 450,345.61/x
  3. Step 3: Cross multiply
    813,012.18x = 1,121,864.34 × 450,345.61
  4. Step 4: Simplify right side
    813,012.18x = 505,226,680,534.55
  5. Step 5: Solve for x
    x = 505,226,680,534.55/813,012.18
  6. Step 6: Final answer
    x = 621,425.72

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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.