Home / 697,141.80-1,045,712.70-431,202.60

Finding the Fourth Proportional to 697,141.80, 1,045,712.70 and 431,202.60

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Solution

The fourth proportional to 697,141.80, 1,045,712.70 and 431,202.60 is: 646,803.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,141.80 : 1,045,712.70 = 431,202.60 : x
  2. Step 2: Convert to fraction form
    697,141.80/1,045,712.70 = 431,202.60/x
  3. Step 3: Cross multiply
    697,141.80x = 1,045,712.70 × 431,202.60
  4. Step 4: Simplify right side
    697,141.80x = 450,914,035,093.02
  5. Step 5: Solve for x
    x = 450,914,035,093.02/697,141.80
  6. Step 6: Final answer
    x = 646,803.90

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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.