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Finding the Fourth Proportional to 1,721,984.59, 2,582,872.30 and 642,289.01

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Solution

The fourth proportional to 1,721,984.59, 2,582,872.30 and 642,289.01 is: 963,394.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721,984.59 : 2,582,872.30 = 642,289.01 : x
  2. Step 2: Convert to fraction form
    1,721,984.59/2,582,872.30 = 642,289.01/x
  3. Step 3: Cross multiply
    1,721,984.59x = 2,582,872.30 × 642,289.01
  4. Step 4: Simplify right side
    1,721,984.59x = 1,658,950,492,523.42
  5. Step 5: Solve for x
    x = 1,658,950,492,523.42/1,721,984.59
  6. Step 6: Final answer
    x = 963,394.51

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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.