Home / 778,574.58-1,074,356.91-451,836.78

Finding the Fourth Proportional to 778,574.58, 1,074,356.91 and 451,836.78

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Solution

The fourth proportional to 778,574.58, 1,074,356.91 and 451,836.78 is: 623,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,574.58 : 1,074,356.91 = 451,836.78 : x
  2. Step 2: Convert to fraction form
    778,574.58/1,074,356.91 = 451,836.78/x
  3. Step 3: Cross multiply
    778,574.58x = 1,074,356.91 × 451,836.78
  4. Step 4: Simplify right side
    778,574.58x = 485,433,966,785.15
  5. Step 5: Solve for x
    x = 485,433,966,785.15/778,574.58
  6. Step 6: Final answer
    x = 623,490.64

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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.