Home / 1,207,714,780.45-1,811,123,619.62-420,566,293.18

Finding the Fourth Proportional to 1,207,714,780.45, 1,811,123,619.62 and 420,566,293.18

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Solution

The fourth proportional to 1,207,714,780.45, 1,811,123,619.62 and 420,566,293.18 is: 630,693,239.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,714,780.45 : 1,811,123,619.62 = 420,566,293.18 : x
  2. Step 2: Convert to fraction form
    1,207,714,780.45/1,811,123,619.62 = 420,566,293.18/x
  3. Step 3: Cross multiply
    1,207,714,780.45x = 1,811,123,619.62 × 420,566,293.18
  4. Step 4: Simplify right side
    1,207,714,780.45x = 761,697,547,185,272,064
  5. Step 5: Solve for x
    x = 761,697,547,185,272,064/1,207,714,780.45
  6. Step 6: Final answer
    x = 630,693,239.43

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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.