Home / 6,642,419.40-9,963,629.10-6,516,448.20

Finding the Fourth Proportional to 6,642,419.40, 9,963,629.10 and 6,516,448.20

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Solution

The fourth proportional to 6,642,419.40, 9,963,629.10 and 6,516,448.20 is: 9,774,672.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,419.40 : 9,963,629.10 = 6,516,448.20 : x
  2. Step 2: Convert to fraction form
    6,642,419.40/9,963,629.10 = 6,516,448.20/x
  3. Step 3: Cross multiply
    6,642,419.40x = 9,963,629.10 × 6,516,448.20
  4. Step 4: Simplify right side
    6,642,419.40x = 64,927,472,914,162.62
  5. Step 5: Solve for x
    x = 64,927,472,914,162.62/6,642,419.40
  6. Step 6: Final answer
    x = 9,774,672.30

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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.