Home / 6,642,420.40-9,963,630.60-6,516,449.20

Finding the Fourth Proportional to 6,642,420.40, 9,963,630.60 and 6,516,449.20

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Solution

The fourth proportional to 6,642,420.40, 9,963,630.60 and 6,516,449.20 is: 9,774,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,420.40 : 9,963,630.60 = 6,516,449.20 : x
  2. Step 2: Convert to fraction form
    6,642,420.40/9,963,630.60 = 6,516,449.20/x
  3. Step 3: Cross multiply
    6,642,420.40x = 9,963,630.60 × 6,516,449.20
  4. Step 4: Simplify right side
    6,642,420.40x = 64,927,492,652,465.52
  5. Step 5: Solve for x
    x = 64,927,492,652,465.52/6,642,420.40
  6. Step 6: Final answer
    x = 9,774,673.80

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Half scale
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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.