Home / 7,128,001.20-10,692,001.80-5,448,385.20

Finding the Fourth Proportional to 7,128,001.20, 10,692,001.80 and 5,448,385.20

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Solution

The fourth proportional to 7,128,001.20, 10,692,001.80 and 5,448,385.20 is: 8,172,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,001.20 : 10,692,001.80 = 5,448,385.20 : x
  2. Step 2: Convert to fraction form
    7,128,001.20/10,692,001.80 = 5,448,385.20/x
  3. Step 3: Cross multiply
    7,128,001.20x = 10,692,001.80 × 5,448,385.20
  4. Step 4: Simplify right side
    7,128,001.20x = 58,254,144,365,493.37
  5. Step 5: Solve for x
    x = 58,254,144,365,493.37/7,128,001.20
  6. Step 6: Final answer
    x = 8,172,577.80

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Similar ratio
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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.