Home / 925,211.70-1,388,335.95-392,642.10

Finding the Fourth Proportional to 925,211.70, 1,388,335.95 and 392,642.10

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Solution

The fourth proportional to 925,211.70, 1,388,335.95 and 392,642.10 is: 589,183.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,211.70 : 1,388,335.95 = 392,642.10 : x
  2. Step 2: Convert to fraction form
    925,211.70/1,388,335.95 = 392,642.10/x
  3. Step 3: Cross multiply
    925,211.70x = 1,388,335.95 × 392,642.10
  4. Step 4: Simplify right side
    925,211.70x = 545,119,142,913.50
  5. Step 5: Solve for x
    x = 545,119,142,913.50/925,211.70
  6. Step 6: Final answer
    x = 589,183.15

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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.