Home / 858,058.20-1,286,803.80-289,285.92

Finding the Fourth Proportional to 858,058.20, 1,286,803.80 and 289,285.92

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Solution

The fourth proportional to 858,058.20, 1,286,803.80 and 289,285.92 is: 433,833.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,058.20 : 1,286,803.80 = 289,285.92 : x
  2. Step 2: Convert to fraction form
    858,058.20/1,286,803.80 = 289,285.92/x
  3. Step 3: Cross multiply
    858,058.20x = 1,286,803.80 × 289,285.92
  4. Step 4: Simplify right side
    858,058.20x = 372,254,221,142.50
  5. Step 5: Solve for x
    x = 372,254,221,142.50/858,058.20
  6. Step 6: Final answer
    x = 433,833.30

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Double scale
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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.