Home / 651,885,487.20-977,828,230.80-215,253,561.60

Finding the Fourth Proportional to 651,885,487.20, 977,828,230.80 and 215,253,561.60

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Solution

The fourth proportional to 651,885,487.20, 977,828,230.80 and 215,253,561.60 is: 322,880,342.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,885,487.20 : 977,828,230.80 = 215,253,561.60 : x
  2. Step 2: Convert to fraction form
    651,885,487.20/977,828,230.80 = 215,253,561.60/x
  3. Step 3: Cross multiply
    651,885,487.20x = 977,828,230.80 × 215,253,561.60
  4. Step 4: Simplify right side
    651,885,487.20x = 210,481,009,312,726,816
  5. Step 5: Solve for x
    x = 210,481,009,312,726,816/651,885,487.20
  6. Step 6: Final answer
    x = 322,880,342.40

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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.