Home / 857,263.12-1,285,894.68-288,596.65

Finding the Fourth Proportional to 857,263.12, 1,285,894.68 and 288,596.65

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Solution

The fourth proportional to 857,263.12, 1,285,894.68 and 288,596.65 is: 432,894.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,263.12 : 1,285,894.68 = 288,596.65 : x
  2. Step 2: Convert to fraction form
    857,263.12/1,285,894.68 = 288,596.65/x
  3. Step 3: Cross multiply
    857,263.12x = 1,285,894.68 × 288,596.65
  4. Step 4: Simplify right side
    857,263.12x = 371,104,896,900.82
  5. Step 5: Solve for x
    x = 371,104,896,900.82/857,263.12
  6. Step 6: Final answer
    x = 432,894.98

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Double scale
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Similar ratio
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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.