Home / 871,302.20-1,307,018.10-310,263.80

Finding the Fourth Proportional to 871,302.20, 1,307,018.10 and 310,263.80

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Solution

The fourth proportional to 871,302.20, 1,307,018.10 and 310,263.80 is: 465,418.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,302.20 : 1,307,018.10 = 310,263.80 : x
  2. Step 2: Convert to fraction form
    871,302.20/1,307,018.10 = 310,263.80/x
  3. Step 3: Cross multiply
    871,302.20x = 1,307,018.10 × 310,263.80
  4. Step 4: Simplify right side
    871,302.20x = 405,520,402,374.78
  5. Step 5: Solve for x
    x = 405,520,402,374.78/871,302.20
  6. Step 6: Final answer
    x = 465,418.77

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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.