Home / 909,404.20-1,364,300.70-278,381.80

Finding the Fourth Proportional to 909,404.20, 1,364,300.70 and 278,381.80

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Solution

The fourth proportional to 909,404.20, 1,364,300.70 and 278,381.80 is: 417,632.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,404.20 : 1,364,300.70 = 278,381.80 : x
  2. Step 2: Convert to fraction form
    909,404.20/1,364,300.70 = 278,381.80/x
  3. Step 3: Cross multiply
    909,404.20x = 1,364,300.70 × 278,381.80
  4. Step 4: Simplify right side
    909,404.20x = 379,796,484,607.26
  5. Step 5: Solve for x
    x = 379,796,484,607.26/909,404.20
  6. Step 6: Final answer
    x = 417,632.21

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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.