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Finding the Fourth Proportional to 450,021.20, 675,031.80 and 425,526.80

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Solution

The fourth proportional to 450,021.20, 675,031.80 and 425,526.80 is: 638,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,021.20 : 675,031.80 = 425,526.80 : x
  2. Step 2: Convert to fraction form
    450,021.20/675,031.80 = 425,526.80/x
  3. Step 3: Cross multiply
    450,021.20x = 675,031.80 × 425,526.80
  4. Step 4: Simplify right side
    450,021.20x = 287,244,121,752.24
  5. Step 5: Solve for x
    x = 287,244,121,752.24/450,021.20
  6. Step 6: Final answer
    x = 638,290.20

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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.