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Finding the Fourth Proportional to 648,482.43, 973,316.92 and 328,854.90

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Solution

The fourth proportional to 648,482.43, 973,316.92 and 328,854.90 is: 493,583.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,482.43 : 973,316.92 = 328,854.90 : x
  2. Step 2: Convert to fraction form
    648,482.43/973,316.92 = 328,854.90/x
  3. Step 3: Cross multiply
    648,482.43x = 973,316.92 × 328,854.90
  4. Step 4: Simplify right side
    648,482.43x = 320,080,038,394.91
  5. Step 5: Solve for x
    x = 320,080,038,394.91/648,482.43
  6. Step 6: Final answer
    x = 493,583.21

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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.