Home / 778,266.36-1,074,275.46-456,080.76

Finding the Fourth Proportional to 778,266.36, 1,074,275.46 and 456,080.76

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Solution

The fourth proportional to 778,266.36, 1,074,275.46 and 456,080.76 is: 629,548.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,266.36 : 1,074,275.46 = 456,080.76 : x
  2. Step 2: Convert to fraction form
    778,266.36/1,074,275.46 = 456,080.76/x
  3. Step 3: Cross multiply
    778,266.36x = 1,074,275.46 × 456,080.76
  4. Step 4: Simplify right side
    778,266.36x = 489,956,368,246.15
  5. Step 5: Solve for x
    x = 489,956,368,246.15/778,266.36
  6. Step 6: Final answer
    x = 629,548.43

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Half scale
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Double scale
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Similar ratio
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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.