Home / 911,359.20-1,259,342.64-790,111.20

Finding the Fourth Proportional to 911,359.20, 1,259,342.64 and 790,111.20

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Solution

The fourth proportional to 911,359.20, 1,259,342.64 and 790,111.20 is: 1,091,798.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,359.20 : 1,259,342.64 = 790,111.20 : x
  2. Step 2: Convert to fraction form
    911,359.20/1,259,342.64 = 790,111.20/x
  3. Step 3: Cross multiply
    911,359.20x = 1,259,342.64 × 790,111.20
  4. Step 4: Simplify right side
    911,359.20x = 995,020,724,501.57
  5. Step 5: Solve for x
    x = 995,020,724,501.57/911,359.20
  6. Step 6: Final answer
    x = 1,091,798.63

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1.5x scale

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.