Home / 772,785.60-1,159,178.40-489,350.40

Finding the Fourth Proportional to 772,785.60, 1,159,178.40 and 489,350.40

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Solution

The fourth proportional to 772,785.60, 1,159,178.40 and 489,350.40 is: 734,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,785.60 : 1,159,178.40 = 489,350.40 : x
  2. Step 2: Convert to fraction form
    772,785.60/1,159,178.40 = 489,350.40/x
  3. Step 3: Cross multiply
    772,785.60x = 1,159,178.40 × 489,350.40
  4. Step 4: Simplify right side
    772,785.60x = 567,244,413,711.36
  5. Step 5: Solve for x
    x = 567,244,413,711.36/772,785.60
  6. Step 6: Final answer
    x = 734,025.60

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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.