Home / 651,726,619.20-977,589,928.80-215,094,693.60

Finding the Fourth Proportional to 651,726,619.20, 977,589,928.80 and 215,094,693.60

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Solution

The fourth proportional to 651,726,619.20, 977,589,928.80 and 215,094,693.60 is: 322,642,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,726,619.20 : 977,589,928.80 = 215,094,693.60 : x
  2. Step 2: Convert to fraction form
    651,726,619.20/977,589,928.80 = 215,094,693.60/x
  3. Step 3: Cross multiply
    651,726,619.20x = 977,589,928.80 × 215,094,693.60
  4. Step 4: Simplify right side
    651,726,619.20x = 210,274,406,201,681,792
  5. Step 5: Solve for x
    x = 210,274,406,201,681,792/651,726,619.20
  6. Step 6: Final answer
    x = 322,642,040.40

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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.