Home / 779,997.60-1,169,413.20-330,350.40

Finding the Fourth Proportional to 779,997.60, 1,169,413.20 and 330,350.40

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Solution

The fourth proportional to 779,997.60, 1,169,413.20 and 330,350.40 is: 495,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,997.60 : 1,169,413.20 = 330,350.40 : x
  2. Step 2: Convert to fraction form
    779,997.60/1,169,413.20 = 330,350.40/x
  3. Step 3: Cross multiply
    779,997.60x = 1,169,413.20 × 330,350.40
  4. Step 4: Simplify right side
    779,997.60x = 386,316,118,385.28
  5. Step 5: Solve for x
    x = 386,316,118,385.28/779,997.60
  6. Step 6: Final answer
    x = 495,278.60

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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.