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Finding the Fourth Proportional to 609,782.80, 915,241.40 and 310,487.12

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Solution

The fourth proportional to 609,782.80, 915,241.40 and 310,487.12 is: 466,019.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,782.80 : 915,241.40 = 310,487.12 : x
  2. Step 2: Convert to fraction form
    609,782.80/915,241.40 = 310,487.12/x
  3. Step 3: Cross multiply
    609,782.80x = 915,241.40 × 310,487.12
  4. Step 4: Simplify right side
    609,782.80x = 284,170,666,390.77
  5. Step 5: Solve for x
    x = 284,170,666,390.77/609,782.80
  6. Step 6: Final answer
    x = 466,019.48

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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.