Home / 579,401.10-869,101.65-558,405.90

Finding the Fourth Proportional to 579,401.10, 869,101.65 and 558,405.90

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Solution

The fourth proportional to 579,401.10, 869,101.65 and 558,405.90 is: 837,608.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,401.10 : 869,101.65 = 558,405.90 : x
  2. Step 2: Convert to fraction form
    579,401.10/869,101.65 = 558,405.90/x
  3. Step 3: Cross multiply
    579,401.10x = 869,101.65 × 558,405.90
  4. Step 4: Simplify right side
    579,401.10x = 485,311,489,059.74
  5. Step 5: Solve for x
    x = 485,311,489,059.74/579,401.10
  6. Step 6: Final answer
    x = 837,608.85

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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.