Home / 890,405.15-1,228,763.43-482,506.89

Finding the Fourth Proportional to 890,405.15, 1,228,763.43 and 482,506.89

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Solution

The fourth proportional to 890,405.15, 1,228,763.43 and 482,506.89 is: 665,861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,405.15 : 1,228,763.43 = 482,506.89 : x
  2. Step 2: Convert to fraction form
    890,405.15/1,228,763.43 = 482,506.89/x
  3. Step 3: Cross multiply
    890,405.15x = 1,228,763.43 × 482,506.89
  4. Step 4: Simplify right side
    890,405.15x = 592,886,821,155.03
  5. Step 5: Solve for x
    x = 592,886,821,155.03/890,405.15
  6. Step 6: Final answer
    x = 665,861.85

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Double scale
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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.