Home / 8,305,685.40-12,458,528.10-6,290,146.20

Finding the Fourth Proportional to 8,305,685.40, 12,458,528.10 and 6,290,146.20

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Solution

The fourth proportional to 8,305,685.40, 12,458,528.10 and 6,290,146.20 is: 9,435,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,305,685.40 : 12,458,528.10 = 6,290,146.20 : x
  2. Step 2: Convert to fraction form
    8,305,685.40/12,458,528.10 = 6,290,146.20/x
  3. Step 3: Cross multiply
    8,305,685.40x = 12,458,528.10 × 6,290,146.20
  4. Step 4: Simplify right side
    8,305,685.40x = 78,365,963,185,808.22
  5. Step 5: Solve for x
    x = 78,365,963,185,808.22/8,305,685.40
  6. Step 6: Final answer
    x = 9,435,219.30

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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.