Home / 858,768.30-1,288,152.45-555,650.10

Finding the Fourth Proportional to 858,768.30, 1,288,152.45 and 555,650.10

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Solution

The fourth proportional to 858,768.30, 1,288,152.45 and 555,650.10 is: 833,475.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,768.30 : 1,288,152.45 = 555,650.10 : x
  2. Step 2: Convert to fraction form
    858,768.30/1,288,152.45 = 555,650.10/x
  3. Step 3: Cross multiply
    858,768.30x = 1,288,152.45 × 555,650.10
  4. Step 4: Simplify right side
    858,768.30x = 715,762,037,657.75
  5. Step 5: Solve for x
    x = 715,762,037,657.75/858,768.30
  6. Step 6: Final answer
    x = 833,475.15

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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.