Home / 1,145,445.78-1,580,718.87-636,148.16

Finding the Fourth Proportional to 1,145,445.78, 1,580,718.87 and 636,148.16

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Solution

The fourth proportional to 1,145,445.78, 1,580,718.87 and 636,148.16 is: 877,886.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,445.78 : 1,580,718.87 = 636,148.16 : x
  2. Step 2: Convert to fraction form
    1,145,445.78/1,580,718.87 = 636,148.16/x
  3. Step 3: Cross multiply
    1,145,445.78x = 1,580,718.87 × 636,148.16
  4. Step 4: Simplify right side
    1,145,445.78x = 1,005,571,400,627.78
  5. Step 5: Solve for x
    x = 1,005,571,400,627.78/1,145,445.78
  6. Step 6: Final answer
    x = 877,886.51

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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.