Home / 869,216.38-1,199,641.13-482,117.90

Finding the Fourth Proportional to 869,216.38, 1,199,641.13 and 482,117.90

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Solution

The fourth proportional to 869,216.38, 1,199,641.13 and 482,117.90 is: 665,390.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,216.38 : 1,199,641.13 = 482,117.90 : x
  2. Step 2: Convert to fraction form
    869,216.38/1,199,641.13 = 482,117.90/x
  3. Step 3: Cross multiply
    869,216.38x = 1,199,641.13 × 482,117.90
  4. Step 4: Simplify right side
    869,216.38x = 578,368,455,748.37
  5. Step 5: Solve for x
    x = 578,368,455,748.37/869,216.38
  6. Step 6: Final answer
    x = 665,390.65

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Double scale
Find fourth proportional to 869,217.38, 1,199,642.51 and 482,118.90
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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.