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Finding the Fourth Proportional to 1,984,488.48, 2,974,960.44 and 721,426.32

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Solution

The fourth proportional to 1,984,488.48, 2,974,960.44 and 721,426.32 is: 1,081,495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984,488.48 : 2,974,960.44 = 721,426.32 : x
  2. Step 2: Convert to fraction form
    1,984,488.48/2,974,960.44 = 721,426.32/x
  3. Step 3: Cross multiply
    1,984,488.48x = 2,974,960.44 × 721,426.32
  4. Step 4: Simplify right side
    1,984,488.48x = 2,146,214,762,374.78
  5. Step 5: Solve for x
    x = 2,146,214,762,374.78/1,984,488.48
  6. Step 6: Final answer
    x = 1,081,495.20

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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.