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Finding the Fourth Proportional to 772,693.60, 1,159,040.40 and 489,258.40

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Solution

The fourth proportional to 772,693.60, 1,159,040.40 and 489,258.40 is: 733,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,693.60 : 1,159,040.40 = 489,258.40 : x
  2. Step 2: Convert to fraction form
    772,693.60/1,159,040.40 = 489,258.40/x
  3. Step 3: Cross multiply
    772,693.60x = 1,159,040.40 × 489,258.40
  4. Step 4: Simplify right side
    772,693.60x = 567,070,251,639.36
  5. Step 5: Solve for x
    x = 567,070,251,639.36/772,693.60
  6. Step 6: Final answer
    x = 733,887.60

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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.