Home / 813,947,389.80-1,220,921,084.70-504,010,998.60

Finding the Fourth Proportional to 813,947,389.80, 1,220,921,084.70 and 504,010,998.60

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Solution

The fourth proportional to 813,947,389.80, 1,220,921,084.70 and 504,010,998.60 is: 756,016,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,947,389.80 : 1,220,921,084.70 = 504,010,998.60 : x
  2. Step 2: Convert to fraction form
    813,947,389.80/1,220,921,084.70 = 504,010,998.60/x
  3. Step 3: Cross multiply
    813,947,389.80x = 1,220,921,084.70 × 504,010,998.60
  4. Step 4: Simplify right side
    813,947,389.80x = 615,357,655,111,442,176
  5. Step 5: Solve for x
    x = 615,357,655,111,442,176/813,947,389.80
  6. Step 6: Final answer
    x = 756,016,497.90

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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.