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Finding the Fourth Proportional to 631,353.34, 871,554.43 and 402,224.84

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Solution

The fourth proportional to 631,353.34, 871,554.43 and 402,224.84 is: 555,253.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,353.34 : 871,554.43 = 402,224.84 : x
  2. Step 2: Convert to fraction form
    631,353.34/871,554.43 = 402,224.84/x
  3. Step 3: Cross multiply
    631,353.34x = 871,554.43 × 402,224.84
  4. Step 4: Simplify right side
    631,353.34x = 350,560,840,571.38
  5. Step 5: Solve for x
    x = 350,560,840,571.38/631,353.34
  6. Step 6: Final answer
    x = 555,253.01

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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.