Home / 645,641.18-891,082.26-373,886.61

Finding the Fourth Proportional to 645,641.18, 891,082.26 and 373,886.61

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Solution

The fourth proportional to 645,641.18, 891,082.26 and 373,886.61 is: 516,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,641.18 : 891,082.26 = 373,886.61 : x
  2. Step 2: Convert to fraction form
    645,641.18/891,082.26 = 373,886.61/x
  3. Step 3: Cross multiply
    645,641.18x = 891,082.26 × 373,886.61
  4. Step 4: Simplify right side
    645,641.18x = 333,163,728,144.87
  5. Step 5: Solve for x
    x = 333,163,728,144.87/645,641.18
  6. Step 6: Final answer
    x = 516,019.95

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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.