Home / 880,829.76-1,215,546.28-478,421.76

Finding the Fourth Proportional to 880,829.76, 1,215,546.28 and 478,421.76

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Solution

The fourth proportional to 880,829.76, 1,215,546.28 and 478,421.76 is: 660,222.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,829.76 : 1,215,546.28 = 478,421.76 : x
  2. Step 2: Convert to fraction form
    880,829.76/1,215,546.28 = 478,421.76/x
  3. Step 3: Cross multiply
    880,829.76x = 1,215,546.28 × 478,421.76
  4. Step 4: Simplify right side
    880,829.76x = 581,543,790,639.05
  5. Step 5: Solve for x
    x = 581,543,790,639.05/880,829.76
  6. Step 6: Final answer
    x = 660,222.69

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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.