Home / 712,942.40-1,069,413.60-239,470.40

Finding the Fourth Proportional to 712,942.40, 1,069,413.60 and 239,470.40

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Solution

The fourth proportional to 712,942.40, 1,069,413.60 and 239,470.40 is: 359,205.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,942.40 : 1,069,413.60 = 239,470.40 : x
  2. Step 2: Convert to fraction form
    712,942.40/1,069,413.60 = 239,470.40/x
  3. Step 3: Cross multiply
    712,942.40x = 1,069,413.60 × 239,470.40
  4. Step 4: Simplify right side
    712,942.40x = 256,092,902,557.44
  5. Step 5: Solve for x
    x = 256,092,902,557.44/712,942.40
  6. Step 6: Final answer
    x = 359,205.60

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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.