Home / 743,878.47-1,115,397.72-680,400.80

Finding the Fourth Proportional to 743,878.47, 1,115,397.72 and 680,400.80

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Solution

The fourth proportional to 743,878.47, 1,115,397.72 and 680,400.80 is: 1,020,217.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,878.47 : 1,115,397.72 = 680,400.80 : x
  2. Step 2: Convert to fraction form
    743,878.47/1,115,397.72 = 680,400.80/x
  3. Step 3: Cross multiply
    743,878.47x = 1,115,397.72 × 680,400.80
  4. Step 4: Simplify right side
    743,878.47x = 758,917,495,429.19
  5. Step 5: Solve for x
    x = 758,917,495,429.19/743,878.47
  6. Step 6: Final answer
    x = 1,020,217.05

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1.5x scale

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.