Home / 631,644.04-871,680.18-345,176.20

Finding the Fourth Proportional to 631,644.04, 871,680.18 and 345,176.20

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Solution

The fourth proportional to 631,644.04, 871,680.18 and 345,176.20 is: 476,349.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,644.04 : 871,680.18 = 345,176.20 : x
  2. Step 2: Convert to fraction form
    631,644.04/871,680.18 = 345,176.20/x
  3. Step 3: Cross multiply
    631,644.04x = 871,680.18 × 345,176.20
  4. Step 4: Simplify right side
    631,644.04x = 300,883,252,147.72
  5. Step 5: Solve for x
    x = 300,883,252,147.72/631,644.04
  6. Step 6: Final answer
    x = 476,349.39

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Double scale
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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.