Home / 1,121,639,955.95-1,680,956,029.92-872,945,510.96

Finding the Fourth Proportional to 1,121,639,955.95, 1,680,956,029.92 and 872,945,510.96

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Solution

The fourth proportional to 1,121,639,955.95, 1,680,956,029.92 and 872,945,510.96 is: 1,308,247,813.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,639,955.95 : 1,680,956,029.92 = 872,945,510.96 : x
  2. Step 2: Convert to fraction form
    1,121,639,955.95/1,680,956,029.92 = 872,945,510.96/x
  3. Step 3: Cross multiply
    1,121,639,955.95x = 1,680,956,029.92 × 872,945,510.96
  4. Step 4: Simplify right side
    1,121,639,955.95x = 1,467,383,020,439,807,488
  5. Step 5: Solve for x
    x = 1,467,383,020,439,807,488/1,121,639,955.95
  6. Step 6: Final answer
    x = 1,308,247,813.98

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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.