Home / 1,207,714,780.31-1,811,123,619.45-420,566,293.05

Finding the Fourth Proportional to 1,207,714,780.31, 1,811,123,619.45 and 420,566,293.05

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Solution

The fourth proportional to 1,207,714,780.31, 1,811,123,619.45 and 420,566,293.05 is: 630,693,239.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,714,780.31 : 1,811,123,619.45 = 420,566,293.05 : x
  2. Step 2: Convert to fraction form
    1,207,714,780.31/1,811,123,619.45 = 420,566,293.05/x
  3. Step 3: Cross multiply
    1,207,714,780.31x = 1,811,123,619.45 × 420,566,293.05
  4. Step 4: Simplify right side
    1,207,714,780.31x = 761,697,546,887,385,472
  5. Step 5: Solve for x
    x = 761,697,546,887,385,472/1,207,714,780.31
  6. Step 6: Final answer
    x = 630,693,239.26

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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.