Home / 778,382.44-1,074,143.40-456,307.05

Finding the Fourth Proportional to 778,382.44, 1,074,143.40 and 456,307.05

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Solution

The fourth proportional to 778,382.44, 1,074,143.40 and 456,307.05 is: 629,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,382.44 : 1,074,143.40 = 456,307.05 : x
  2. Step 2: Convert to fraction form
    778,382.44/1,074,143.40 = 456,307.05/x
  3. Step 3: Cross multiply
    778,382.44x = 1,074,143.40 × 456,307.05
  4. Step 4: Simplify right side
    778,382.44x = 490,139,198,478.72
  5. Step 5: Solve for x
    x = 490,139,198,478.72/778,382.44
  6. Step 6: Final answer
    x = 629,689.43

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Double scale
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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.