Home / 7,128,509.60-10,669,144.80-6,561,639.20

Finding the Fourth Proportional to 7,128,509.60, 10,669,144.80 and 6,561,639.20

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Solution

The fourth proportional to 7,128,509.60, 10,669,144.80 and 6,561,639.20 is: 9,820,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,509.60 : 10,669,144.80 = 6,561,639.20 : x
  2. Step 2: Convert to fraction form
    7,128,509.60/10,669,144.80 = 6,561,639.20/x
  3. Step 3: Cross multiply
    7,128,509.60x = 10,669,144.80 × 6,561,639.20
  4. Step 4: Simplify right side
    7,128,509.60x = 70,007,078,750,156.16
  5. Step 5: Solve for x
    x = 70,007,078,750,156.16/7,128,509.60
  6. Step 6: Final answer
    x = 9,820,717.47

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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.