Home / 880,814.40-1,215,529.98-478,406.40

Finding the Fourth Proportional to 880,814.40, 1,215,529.98 and 478,406.40

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Solution

The fourth proportional to 880,814.40, 1,215,529.98 and 478,406.40 is: 660,204.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,814.40 : 1,215,529.98 = 478,406.40 : x
  2. Step 2: Convert to fraction form
    880,814.40/1,215,529.98 = 478,406.40/x
  3. Step 3: Cross multiply
    880,814.40x = 1,215,529.98 × 478,406.40
  4. Step 4: Simplify right side
    880,814.40x = 581,517,321,823.87
  5. Step 5: Solve for x
    x = 581,517,321,823.87/880,814.40
  6. Step 6: Final answer
    x = 660,204.15

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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.