Home / 805,129.76-1,111,081.86-442,585.08

Finding the Fourth Proportional to 805,129.76, 1,111,081.86 and 442,585.08

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Solution

The fourth proportional to 805,129.76, 1,111,081.86 and 442,585.08 is: 610,768.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,129.76 : 1,111,081.86 = 442,585.08 : x
  2. Step 2: Convert to fraction form
    805,129.76/1,111,081.86 = 442,585.08/x
  3. Step 3: Cross multiply
    805,129.76x = 1,111,081.86 × 442,585.08
  4. Step 4: Simplify right side
    805,129.76x = 491,748,253,894.65
  5. Step 5: Solve for x
    x = 491,748,253,894.65/805,129.76
  6. Step 6: Final answer
    x = 610,768.94

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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.