Home / 869,336.13-1,199,741.45-487,387.65

Finding the Fourth Proportional to 869,336.13, 1,199,741.45 and 487,387.65

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Solution

The fourth proportional to 869,336.13, 1,199,741.45 and 487,387.65 is: 672,627.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,336.13 : 1,199,741.45 = 487,387.65 : x
  2. Step 2: Convert to fraction form
    869,336.13/1,199,741.45 = 487,387.65/x
  3. Step 3: Cross multiply
    869,336.13x = 1,199,741.45 × 487,387.65
  4. Step 4: Simplify right side
    869,336.13x = 584,739,163,486.15
  5. Step 5: Solve for x
    x = 584,739,163,486.15/869,336.13
  6. Step 6: Final answer
    x = 672,627.24

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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.