Home / 880,719.84-1,215,399.60-478,311.84

Finding the Fourth Proportional to 880,719.84, 1,215,399.60 and 478,311.84

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Solution

The fourth proportional to 880,719.84, 1,215,399.60 and 478,311.84 is: 660,073.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,719.84 : 1,215,399.60 = 478,311.84 : x
  2. Step 2: Convert to fraction form
    880,719.84/1,215,399.60 = 478,311.84/x
  3. Step 3: Cross multiply
    880,719.84x = 1,215,399.60 × 478,311.84
  4. Step 4: Simplify right side
    880,719.84x = 581,340,019,011.26
  5. Step 5: Solve for x
    x = 581,340,019,011.26/880,719.84
  6. Step 6: Final answer
    x = 660,073.72

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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.