Home / 758,962.60-1,138,443.90-285,754.12

Finding the Fourth Proportional to 758,962.60, 1,138,443.90 and 285,754.12

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Solution

The fourth proportional to 758,962.60, 1,138,443.90 and 285,754.12 is: 428,631.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,962.60 : 1,138,443.90 = 285,754.12 : x
  2. Step 2: Convert to fraction form
    758,962.60/1,138,443.90 = 285,754.12/x
  3. Step 3: Cross multiply
    758,962.60x = 1,138,443.90 × 285,754.12
  4. Step 4: Simplify right side
    758,962.60x = 325,315,034,813.87
  5. Step 5: Solve for x
    x = 325,315,034,813.87/758,962.60
  6. Step 6: Final answer
    x = 428,631.18

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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.