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Finding the Fourth Proportional to 631,742.07, 871,804.14 and 345,262.08

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Solution

The fourth proportional to 631,742.07, 871,804.14 and 345,262.08 is: 476,461.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,742.07 : 871,804.14 = 345,262.08 : x
  2. Step 2: Convert to fraction form
    631,742.07/871,804.14 = 345,262.08/x
  3. Step 3: Cross multiply
    631,742.07x = 871,804.14 × 345,262.08
  4. Step 4: Simplify right side
    631,742.07x = 301,000,910,729.01
  5. Step 5: Solve for x
    x = 301,000,910,729.01/631,742.07
  6. Step 6: Final answer
    x = 476,461.72

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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.