Home / 858,784.20-1,288,176.30-740,686.20

Finding the Fourth Proportional to 858,784.20, 1,288,176.30 and 740,686.20

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Solution

The fourth proportional to 858,784.20, 1,288,176.30 and 740,686.20 is: 1,111,029.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,784.20 : 1,288,176.30 = 740,686.20 : x
  2. Step 2: Convert to fraction form
    858,784.20/1,288,176.30 = 740,686.20/x
  3. Step 3: Cross multiply
    858,784.20x = 1,288,176.30 × 740,686.20
  4. Step 4: Simplify right side
    858,784.20x = 954,134,408,577.06
  5. Step 5: Solve for x
    x = 954,134,408,577.06/858,784.20
  6. Step 6: Final answer
    x = 1,111,029.30

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Double scale
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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.