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Finding the Fourth Proportional to 680,908.80, 1,021,363.20 and 606,259.20

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Solution

The fourth proportional to 680,908.80, 1,021,363.20 and 606,259.20 is: 909,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,908.80 : 1,021,363.20 = 606,259.20 : x
  2. Step 2: Convert to fraction form
    680,908.80/1,021,363.20 = 606,259.20/x
  3. Step 3: Cross multiply
    680,908.80x = 1,021,363.20 × 606,259.20
  4. Step 4: Simplify right side
    680,908.80x = 619,210,836,541.44
  5. Step 5: Solve for x
    x = 619,210,836,541.44/680,908.80
  6. Step 6: Final answer
    x = 909,388.80

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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.