Home / 708,143.46-977,165.55-397,996.62

Finding the Fourth Proportional to 708,143.46, 977,165.55 and 397,996.62

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Solution

The fourth proportional to 708,143.46, 977,165.55 and 397,996.62 is: 549,194.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,143.46 : 977,165.55 = 397,996.62 : x
  2. Step 2: Convert to fraction form
    708,143.46/977,165.55 = 397,996.62/x
  3. Step 3: Cross multiply
    708,143.46x = 977,165.55 × 397,996.62
  4. Step 4: Simplify right side
    708,143.46x = 388,908,586,080.44
  5. Step 5: Solve for x
    x = 388,908,586,080.44/708,143.46
  6. Step 6: Final answer
    x = 549,194.63

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.