Home / 1,312,685.16-1,969,027.75-315,413.16

Finding the Fourth Proportional to 1,312,685.16, 1,969,027.75 and 315,413.16

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Solution

The fourth proportional to 1,312,685.16, 1,969,027.75 and 315,413.16 is: 473,119.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,685.16 : 1,969,027.75 = 315,413.16 : x
  2. Step 2: Convert to fraction form
    1,312,685.16/1,969,027.75 = 315,413.16/x
  3. Step 3: Cross multiply
    1,312,685.16x = 1,969,027.75 × 315,413.16
  4. Step 4: Simplify right side
    1,312,685.16x = 621,057,257,765.60
  5. Step 5: Solve for x
    x = 621,057,257,765.60/1,312,685.16
  6. Step 6: Final answer
    x = 473,119.74

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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.