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Finding the Fourth Proportional to 522,087.20, 783,130.80 and 459,879.20

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Solution

The fourth proportional to 522,087.20, 783,130.80 and 459,879.20 is: 689,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,087.20 : 783,130.80 = 459,879.20 : x
  2. Step 2: Convert to fraction form
    522,087.20/783,130.80 = 459,879.20/x
  3. Step 3: Cross multiply
    522,087.20x = 783,130.80 × 459,879.20
  4. Step 4: Simplify right side
    522,087.20x = 360,145,565,799.36
  5. Step 5: Solve for x
    x = 360,145,565,799.36/522,087.20
  6. Step 6: Final answer
    x = 689,818.80

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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.