Home / 767,680.08-1,059,400.35-428,170.20

Finding the Fourth Proportional to 767,680.08, 1,059,400.35 and 428,170.20

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Solution

The fourth proportional to 767,680.08, 1,059,400.35 and 428,170.20 is: 590,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,680.08 : 1,059,400.35 = 428,170.20 : x
  2. Step 2: Convert to fraction form
    767,680.08/1,059,400.35 = 428,170.20/x
  3. Step 3: Cross multiply
    767,680.08x = 1,059,400.35 × 428,170.20
  4. Step 4: Simplify right side
    767,680.08x = 453,603,659,739.57
  5. Step 5: Solve for x
    x = 453,603,659,739.57/767,680.08
  6. Step 6: Final answer
    x = 590,875.90

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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.