Home / 762,429.20-1,143,643.80-342,525.20

Finding the Fourth Proportional to 762,429.20, 1,143,643.80 and 342,525.20

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Solution

The fourth proportional to 762,429.20, 1,143,643.80 and 342,525.20 is: 513,787.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,429.20 : 1,143,643.80 = 342,525.20 : x
  2. Step 2: Convert to fraction form
    762,429.20/1,143,643.80 = 342,525.20/x
  3. Step 3: Cross multiply
    762,429.20x = 1,143,643.80 × 342,525.20
  4. Step 4: Simplify right side
    762,429.20x = 391,726,821,323.76
  5. Step 5: Solve for x
    x = 391,726,821,323.76/762,429.20
  6. Step 6: Final answer
    x = 513,787.80

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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.