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Finding the Fourth Proportional to 712,642.54, 983,441.82 and 385,948.03

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Solution

The fourth proportional to 712,642.54, 983,441.82 and 385,948.03 is: 532,605.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,642.54 : 983,441.82 = 385,948.03 : x
  2. Step 2: Convert to fraction form
    712,642.54/983,441.82 = 385,948.03/x
  3. Step 3: Cross multiply
    712,642.54x = 983,441.82 × 385,948.03
  4. Step 4: Simplify right side
    712,642.54x = 379,557,433,048.62
  5. Step 5: Solve for x
    x = 379,557,433,048.62/712,642.54
  6. Step 6: Final answer
    x = 532,605.64

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1.5x scale

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.