Home / 1,312,685.66-1,969,028.50-315,413.66

Finding the Fourth Proportional to 1,312,685.66, 1,969,028.50 and 315,413.66

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Solution

The fourth proportional to 1,312,685.66, 1,969,028.50 and 315,413.66 is: 473,120.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,685.66 : 1,969,028.50 = 315,413.66 : x
  2. Step 2: Convert to fraction form
    1,312,685.66/1,969,028.50 = 315,413.66/x
  3. Step 3: Cross multiply
    1,312,685.66x = 1,969,028.50 × 315,413.66
  4. Step 4: Simplify right side
    1,312,685.66x = 621,058,475,984.17
  5. Step 5: Solve for x
    x = 621,058,475,984.17/1,312,685.66
  6. Step 6: Final answer
    x = 473,120.49

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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.