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Finding the Fourth Proportional to 7,240,907.60, 10,868,359.80 and 3,650,728.40

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Solution

The fourth proportional to 7,240,907.60, 10,868,359.80 and 3,650,728.40 is: 5,479,621.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240,907.60 : 10,868,359.80 = 3,650,728.40 : x
  2. Step 2: Convert to fraction form
    7,240,907.60/10,868,359.80 = 3,650,728.40/x
  3. Step 3: Cross multiply
    7,240,907.60x = 10,868,359.80 × 3,650,728.40
  4. Step 4: Simplify right side
    7,240,907.60x = 39,677,429,783,278.32
  5. Step 5: Solve for x
    x = 39,677,429,783,278.32/7,240,907.60
  6. Step 6: Final answer
    x = 5,479,621.06

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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.