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Finding the Fourth Proportional to 631,262.12, 871,225.62 and 401,842.76

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Solution

The fourth proportional to 631,262.12, 871,225.62 and 401,842.76 is: 554,596.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,262.12 : 871,225.62 = 401,842.76 : x
  2. Step 2: Convert to fraction form
    631,262.12/871,225.62 = 401,842.76/x
  3. Step 3: Cross multiply
    631,262.12x = 871,225.62 × 401,842.76
  4. Step 4: Simplify right side
    631,262.12x = 350,095,707,723.51
  5. Step 5: Solve for x
    x = 350,095,707,723.51/631,262.12
  6. Step 6: Final answer
    x = 554,596.41

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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.