Home / 1,182,479.17-1,631,820.85-638,615.07

Finding the Fourth Proportional to 1,182,479.17, 1,631,820.85 and 638,615.07

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Solution

The fourth proportional to 1,182,479.17, 1,631,820.85 and 638,615.07 is: 881,288.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182,479.17 : 1,631,820.85 = 638,615.07 : x
  2. Step 2: Convert to fraction form
    1,182,479.17/1,631,820.85 = 638,615.07/x
  3. Step 3: Cross multiply
    1,182,479.17x = 1,631,820.85 × 638,615.07
  4. Step 4: Simplify right side
    1,182,479.17x = 1,042,105,386,350.21
  5. Step 5: Solve for x
    x = 1,042,105,386,350.21/1,182,479.17
  6. Step 6: Final answer
    x = 881,288.58

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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.