Home / 6,878,085.40-10,317,128.10-6,771,797.20

Finding the Fourth Proportional to 6,878,085.40, 10,317,128.10 and 6,771,797.20

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Solution

The fourth proportional to 6,878,085.40, 10,317,128.10 and 6,771,797.20 is: 10,157,695.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,878,085.40 : 10,317,128.10 = 6,771,797.20 : x
  2. Step 2: Convert to fraction form
    6,878,085.40/10,317,128.10 = 6,771,797.20/x
  3. Step 3: Cross multiply
    6,878,085.40x = 10,317,128.10 × 6,771,797.20
  4. Step 4: Simplify right side
    6,878,085.40x = 69,865,499,179,621.32
  5. Step 5: Solve for x
    x = 69,865,499,179,621.32/6,878,085.40
  6. Step 6: Final answer
    x = 10,157,695.80

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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.