Home / 990,785,200.10-1,486,177,800.15-300,691,346.90

Finding the Fourth Proportional to 990,785,200.10, 1,486,177,800.15 and 300,691,346.90

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Solution

The fourth proportional to 990,785,200.10, 1,486,177,800.15 and 300,691,346.90 is: 451,037,020.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,785,200.10 : 1,486,177,800.15 = 300,691,346.90 : x
  2. Step 2: Convert to fraction form
    990,785,200.10/1,486,177,800.15 = 300,691,346.90/x
  3. Step 3: Cross multiply
    990,785,200.10x = 1,486,177,800.15 × 300,691,346.90
  4. Step 4: Simplify right side
    990,785,200.10x = 446,880,804,459,982,528
  5. Step 5: Solve for x
    x = 446,880,804,459,982,528/990,785,200.10
  6. Step 6: Final answer
    x = 451,037,020.35

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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.