Home / 813,967.20-1,221,126.21-274,277.57

Finding the Fourth Proportional to 813,967.20, 1,221,126.21 and 274,277.57

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Solution

The fourth proportional to 813,967.20, 1,221,126.21 and 274,277.57 is: 411,475.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,967.20 : 1,221,126.21 = 274,277.57 : x
  2. Step 2: Convert to fraction form
    813,967.20/1,221,126.21 = 274,277.57/x
  3. Step 3: Cross multiply
    813,967.20x = 1,221,126.21 × 274,277.57
  4. Step 4: Simplify right side
    813,967.20x = 334,927,523,436.48
  5. Step 5: Solve for x
    x = 334,927,523,436.48/813,967.20
  6. Step 6: Final answer
    x = 411,475.45

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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.