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Finding the Fourth Proportional to 871,808.70, 1,307,907.45 and 682,851.90

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Solution

The fourth proportional to 871,808.70, 1,307,907.45 and 682,851.90 is: 1,024,430.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,808.70 : 1,307,907.45 = 682,851.90 : x
  2. Step 2: Convert to fraction form
    871,808.70/1,307,907.45 = 682,851.90/x
  3. Step 3: Cross multiply
    871,808.70x = 1,307,907.45 × 682,851.90
  4. Step 4: Simplify right side
    871,808.70x = 893,107,087,256.66
  5. Step 5: Solve for x
    x = 893,107,087,256.66/871,808.70
  6. Step 6: Final answer
    x = 1,024,430.12

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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.