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Finding the Fourth Proportional to 438,424.80, 614,416.80 and 438,424.80

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Solution

The fourth proportional to 438,424.80, 614,416.80 and 438,424.80 is: 614,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,424.80 : 614,416.80 = 438,424.80 : x
  2. Step 2: Convert to fraction form
    438,424.80/614,416.80 = 438,424.80/x
  3. Step 3: Cross multiply
    438,424.80x = 614,416.80 × 438,424.80
  4. Step 4: Simplify right side
    438,424.80x = 269,375,562,656.64
  5. Step 5: Solve for x
    x = 269,375,562,656.64/438,424.80
  6. Step 6: Final answer
    x = 614,416.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.