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Finding the Fourth Proportional to 1,308,968.28, 1,962,966.30 and 455,820.90

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Solution

The fourth proportional to 1,308,968.28, 1,962,966.30 and 455,820.90 is: 683,562.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,968.28 : 1,962,966.30 = 455,820.90 : x
  2. Step 2: Convert to fraction form
    1,308,968.28/1,962,966.30 = 455,820.90/x
  3. Step 3: Cross multiply
    1,308,968.28x = 1,962,966.30 × 455,820.90
  4. Step 4: Simplify right side
    1,308,968.28x = 894,761,065,535.67
  5. Step 5: Solve for x
    x = 894,761,065,535.67/1,308,968.28
  6. Step 6: Final answer
    x = 683,562.07

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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.