Home / 999,148.22-1,378,832.31-551,612.87

Finding the Fourth Proportional to 999,148.22, 1,378,832.31 and 551,612.87

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Solution

The fourth proportional to 999,148.22, 1,378,832.31 and 551,612.87 is: 761,230.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,148.22 : 1,378,832.31 = 551,612.87 : x
  2. Step 2: Convert to fraction form
    999,148.22/1,378,832.31 = 551,612.87/x
  3. Step 3: Cross multiply
    999,148.22x = 1,378,832.31 × 551,612.87
  4. Step 4: Simplify right side
    999,148.22x = 760,581,640,873.67
  5. Step 5: Solve for x
    x = 760,581,640,873.67/999,148.22
  6. Step 6: Final answer
    x = 761,230.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.