Home / 7,128,002.30-10,692,003.45-4,388,128.70

Finding the Fourth Proportional to 7,128,002.30, 10,692,003.45 and 4,388,128.70

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Solution

The fourth proportional to 7,128,002.30, 10,692,003.45 and 4,388,128.70 is: 6,582,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,002.30 : 10,692,003.45 = 4,388,128.70 : x
  2. Step 2: Convert to fraction form
    7,128,002.30/10,692,003.45 = 4,388,128.70/x
  3. Step 3: Cross multiply
    7,128,002.30x = 10,692,003.45 × 4,388,128.70
  4. Step 4: Simplify right side
    7,128,002.30x = 46,917,887,199,444.02
  5. Step 5: Solve for x
    x = 46,917,887,199,444.02/7,128,002.30
  6. Step 6: Final answer
    x = 6,582,193.05

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Double scale
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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.