Home / 691,760,800.80-1,037,641,201.20-661,905,626.40

Finding the Fourth Proportional to 691,760,800.80, 1,037,641,201.20 and 661,905,626.40

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Solution

The fourth proportional to 691,760,800.80, 1,037,641,201.20 and 661,905,626.40 is: 992,858,439.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,760,800.80 : 1,037,641,201.20 = 661,905,626.40 : x
  2. Step 2: Convert to fraction form
    691,760,800.80/1,037,641,201.20 = 661,905,626.40/x
  3. Step 3: Cross multiply
    691,760,800.80x = 1,037,641,201.20 × 661,905,626.40
  4. Step 4: Simplify right side
    691,760,800.80x = 686,820,549,258,734,464
  5. Step 5: Solve for x
    x = 686,820,549,258,734,464/691,760,800.80
  6. Step 6: Final answer
    x = 992,858,439.60

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1.5x scale

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.