Home / 1,120,368,045.60-1,679,418,327.60-660,069,280.80

Finding the Fourth Proportional to 1,120,368,045.60, 1,679,418,327.60 and 660,069,280.80

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Solution

The fourth proportional to 1,120,368,045.60, 1,679,418,327.60 and 660,069,280.80 is: 989,435,973.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,368,045.60 : 1,679,418,327.60 = 660,069,280.80 : x
  2. Step 2: Convert to fraction form
    1,120,368,045.60/1,679,418,327.60 = 660,069,280.80/x
  3. Step 3: Cross multiply
    1,120,368,045.60x = 1,679,418,327.60 × 660,069,280.80
  4. Step 4: Simplify right side
    1,120,368,045.60x = 1,108,532,447,661,270,656
  5. Step 5: Solve for x
    x = 1,108,532,447,661,270,656/1,120,368,045.60
  6. Step 6: Final answer
    x = 989,435,973.31

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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.