Home / 856,920.20-1,285,560.06-257,925.20

Finding the Fourth Proportional to 856,920.20, 1,285,560.06 and 257,925.20

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Solution

The fourth proportional to 856,920.20, 1,285,560.06 and 257,925.20 is: 386,941.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,920.20 : 1,285,560.06 = 257,925.20 : x
  2. Step 2: Convert to fraction form
    856,920.20/1,285,560.06 = 257,925.20/x
  3. Step 3: Cross multiply
    856,920.20x = 1,285,560.06 × 257,925.20
  4. Step 4: Simplify right side
    856,920.20x = 331,578,335,587.51
  5. Step 5: Solve for x
    x = 331,578,335,587.51/856,920.20
  6. Step 6: Final answer
    x = 386,941.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.