Home / 626,221.80-939,851.10-289,780.20

Finding the Fourth Proportional to 626,221.80, 939,851.10 and 289,780.20

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Solution

The fourth proportional to 626,221.80, 939,851.10 and 289,780.20 is: 434,910.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,221.80 : 939,851.10 = 289,780.20 : x
  2. Step 2: Convert to fraction form
    626,221.80/939,851.10 = 289,780.20/x
  3. Step 3: Cross multiply
    626,221.80x = 939,851.10 × 289,780.20
  4. Step 4: Simplify right side
    626,221.80x = 272,350,239,728.22
  5. Step 5: Solve for x
    x = 272,350,239,728.22/626,221.80
  6. Step 6: Final answer
    x = 434,910.19

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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.