Home / 871,290.70-1,307,000.85-310,252.30

Finding the Fourth Proportional to 871,290.70, 1,307,000.85 and 310,252.30

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Solution

The fourth proportional to 871,290.70, 1,307,000.85 and 310,252.30 is: 465,401.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,290.70 : 1,307,000.85 = 310,252.30 : x
  2. Step 2: Convert to fraction form
    871,290.70/1,307,000.85 = 310,252.30/x
  3. Step 3: Cross multiply
    871,290.70x = 1,307,000.85 × 310,252.30
  4. Step 4: Simplify right side
    871,290.70x = 405,500,019,814.46
  5. Step 5: Solve for x
    x = 405,500,019,814.46/871,290.70
  6. Step 6: Final answer
    x = 465,401.52

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1.5x scale

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.