Home / 1,280,625.68-1,920,335.64-748,300.40

Finding the Fourth Proportional to 1,280,625.68, 1,920,335.64 and 748,300.40

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Solution

The fourth proportional to 1,280,625.68, 1,920,335.64 and 748,300.40 is: 1,122,098.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,625.68 : 1,920,335.64 = 748,300.40 : x
  2. Step 2: Convert to fraction form
    1,280,625.68/1,920,335.64 = 748,300.40/x
  3. Step 3: Cross multiply
    1,280,625.68x = 1,920,335.64 × 748,300.40
  4. Step 4: Simplify right side
    1,280,625.68x = 1,436,987,927,546.26
  5. Step 5: Solve for x
    x = 1,436,987,927,546.26/1,280,625.68
  6. Step 6: Final answer
    x = 1,122,098.32

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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.