Home / 7,128,001.70-10,692,002.55-4,293,649.70

Finding the Fourth Proportional to 7,128,001.70, 10,692,002.55 and 4,293,649.70

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Solution

The fourth proportional to 7,128,001.70, 10,692,002.55 and 4,293,649.70 is: 6,440,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,001.70 : 10,692,002.55 = 4,293,649.70 : x
  2. Step 2: Convert to fraction form
    7,128,001.70/10,692,002.55 = 4,293,649.70/x
  3. Step 3: Cross multiply
    7,128,001.70x = 10,692,002.55 × 4,293,649.70
  4. Step 4: Simplify right side
    7,128,001.70x = 45,907,713,541,206.74
  5. Step 5: Solve for x
    x = 45,907,713,541,206.74/7,128,001.70
  6. Step 6: Final answer
    x = 6,440,474.55

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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.