Home / 7,139,340-9,852,289.20-3,920,076

Finding the Fourth Proportional to 7,139,340, 9,852,289.20 and 3,920,076

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Solution

The fourth proportional to 7,139,340, 9,852,289.20 and 3,920,076 is: 5,409,704.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139,340 : 9,852,289.20 = 3,920,076 : x
  2. Step 2: Convert to fraction form
    7,139,340/9,852,289.20 = 3,920,076/x
  3. Step 3: Cross multiply
    7,139,340x = 9,852,289.20 × 3,920,076
  4. Step 4: Simplify right side
    7,139,340x = 38,621,722,437,979.20
  5. Step 5: Solve for x
    x = 38,621,722,437,979.20/7,139,340
  6. Step 6: Final answer
    x = 5,409,704.88

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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.