Home / 6,642,409.40-9,963,614.10-5,315,305.40

Finding the Fourth Proportional to 6,642,409.40, 9,963,614.10 and 5,315,305.40

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Solution

The fourth proportional to 6,642,409.40, 9,963,614.10 and 5,315,305.40 is: 7,972,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,409.40 : 9,963,614.10 = 5,315,305.40 : x
  2. Step 2: Convert to fraction form
    6,642,409.40/9,963,614.10 = 5,315,305.40/x
  3. Step 3: Cross multiply
    6,642,409.40x = 9,963,614.10 × 5,315,305.40
  4. Step 4: Simplify right side
    6,642,409.40x = 52,959,651,829,246.14
  5. Step 5: Solve for x
    x = 52,959,651,829,246.14/6,642,409.40
  6. Step 6: Final answer
    x = 7,972,958.10

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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.