Home / 778,816.77-1,074,781.13-456,759.15

Finding the Fourth Proportional to 778,816.77, 1,074,781.13 and 456,759.15

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Solution

The fourth proportional to 778,816.77, 1,074,781.13 and 456,759.15 is: 630,335.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,816.77 : 1,074,781.13 = 456,759.15 : x
  2. Step 2: Convert to fraction form
    778,816.77/1,074,781.13 = 456,759.15/x
  3. Step 3: Cross multiply
    778,816.77x = 1,074,781.13 × 456,759.15
  4. Step 4: Simplify right side
    778,816.77x = 490,916,115,374.84
  5. Step 5: Solve for x
    x = 490,916,115,374.84/778,816.77
  6. Step 6: Final answer
    x = 630,335.83

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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.