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Finding the Fourth Proportional to 880,682.40, 1,320,148.80 and 406,540.80

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Solution

The fourth proportional to 880,682.40, 1,320,148.80 and 406,540.80 is: 609,407.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,682.40 : 1,320,148.80 = 406,540.80 : x
  2. Step 2: Convert to fraction form
    880,682.40/1,320,148.80 = 406,540.80/x
  3. Step 3: Cross multiply
    880,682.40x = 1,320,148.80 × 406,540.80
  4. Step 4: Simplify right side
    880,682.40x = 536,694,349,271.04
  5. Step 5: Solve for x
    x = 536,694,349,271.04/880,682.40
  6. Step 6: Final answer
    x = 609,407.37

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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.