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Finding the Fourth Proportional to 710,862.24, 980,972.46 and 388,563.24

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Solution

The fourth proportional to 710,862.24, 980,972.46 and 388,563.24 is: 536,207.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,862.24 : 980,972.46 = 388,563.24 : x
  2. Step 2: Convert to fraction form
    710,862.24/980,972.46 = 388,563.24/x
  3. Step 3: Cross multiply
    710,862.24x = 980,972.46 × 388,563.24
  4. Step 4: Simplify right side
    710,862.24x = 381,169,837,408.37
  5. Step 5: Solve for x
    x = 381,169,837,408.37/710,862.24
  6. Step 6: Final answer
    x = 536,207.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.