Home / 869,012.52-1,199,235.69-487,039.20

Finding the Fourth Proportional to 869,012.52, 1,199,235.69 and 487,039.20

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Solution

The fourth proportional to 869,012.52, 1,199,235.69 and 487,039.20 is: 672,113.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,012.52 : 1,199,235.69 = 487,039.20 : x
  2. Step 2: Convert to fraction form
    869,012.52/1,199,235.69 = 487,039.20/x
  3. Step 3: Cross multiply
    869,012.52x = 1,199,235.69 × 487,039.20
  4. Step 4: Simplify right side
    869,012.52x = 584,074,791,069.05
  5. Step 5: Solve for x
    x = 584,074,791,069.05/869,012.52
  6. Step 6: Final answer
    x = 672,113.21

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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.