Home / 841,279.40-1,262,119.98-280,318.76

Finding the Fourth Proportional to 841,279.40, 1,262,119.98 and 280,318.76

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Solution

The fourth proportional to 841,279.40, 1,262,119.98 and 280,318.76 is: 420,545.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,279.40 : 1,262,119.98 = 280,318.76 : x
  2. Step 2: Convert to fraction form
    841,279.40/1,262,119.98 = 280,318.76/x
  3. Step 3: Cross multiply
    841,279.40x = 1,262,119.98 × 280,318.76
  4. Step 4: Simplify right side
    841,279.40x = 353,795,907,764.83
  5. Step 5: Solve for x
    x = 353,795,907,764.83/841,279.40
  6. Step 6: Final answer
    x = 420,545.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.