Home / 778,410.28-1,074,212.58-456,129.64

Finding the Fourth Proportional to 778,410.28, 1,074,212.58 and 456,129.64

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Solution

The fourth proportional to 778,410.28, 1,074,212.58 and 456,129.64 is: 629,462.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,410.28 : 1,074,212.58 = 456,129.64 : x
  2. Step 2: Convert to fraction form
    778,410.28/1,074,212.58 = 456,129.64/x
  3. Step 3: Cross multiply
    778,410.28x = 1,074,212.58 × 456,129.64
  4. Step 4: Simplify right side
    778,410.28x = 489,980,197,398.87
  5. Step 5: Solve for x
    x = 489,980,197,398.87/778,410.28
  6. Step 6: Final answer
    x = 629,462.65

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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.