Home / 746,478.24-1,120,364.40-391,742.88

Finding the Fourth Proportional to 746,478.24, 1,120,364.40 and 391,742.88

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Solution

The fourth proportional to 746,478.24, 1,120,364.40 and 391,742.88 is: 587,953.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,478.24 : 1,120,364.40 = 391,742.88 : x
  2. Step 2: Convert to fraction form
    746,478.24/1,120,364.40 = 391,742.88/x
  3. Step 3: Cross multiply
    746,478.24x = 1,120,364.40 × 391,742.88
  4. Step 4: Simplify right side
    746,478.24x = 438,894,776,705.47
  5. Step 5: Solve for x
    x = 438,894,776,705.47/746,478.24
  6. Step 6: Final answer
    x = 587,953.88

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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.