Home / 813,947,390.30-1,220,921,085.45-504,010,999.10

Finding the Fourth Proportional to 813,947,390.30, 1,220,921,085.45 and 504,010,999.10

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Solution

The fourth proportional to 813,947,390.30, 1,220,921,085.45 and 504,010,999.10 is: 756,016,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,947,390.30 : 1,220,921,085.45 = 504,010,999.10 : x
  2. Step 2: Convert to fraction form
    813,947,390.30/1,220,921,085.45 = 504,010,999.10/x
  3. Step 3: Cross multiply
    813,947,390.30x = 1,220,921,085.45 × 504,010,999.10
  4. Step 4: Simplify right side
    813,947,390.30x = 615,357,656,099,911,040
  5. Step 5: Solve for x
    x = 615,357,656,099,911,040/813,947,390.30
  6. Step 6: Final answer
    x = 756,016,498.65

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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.