Home / 818,721.90-1,228,082.85-464,427.90

Finding the Fourth Proportional to 818,721.90, 1,228,082.85 and 464,427.90

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Solution

The fourth proportional to 818,721.90, 1,228,082.85 and 464,427.90 is: 696,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,721.90 : 1,228,082.85 = 464,427.90 : x
  2. Step 2: Convert to fraction form
    818,721.90/1,228,082.85 = 464,427.90/x
  3. Step 3: Cross multiply
    818,721.90x = 1,228,082.85 × 464,427.90
  4. Step 4: Simplify right side
    818,721.90x = 570,355,939,051.52
  5. Step 5: Solve for x
    x = 570,355,939,051.52/818,721.90
  6. Step 6: Final answer
    x = 696,641.85

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Double scale
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Similar ratio
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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.