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Finding the Fourth Proportional to 535,381.64, 738,888.41 and 320,521.58

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Solution

The fourth proportional to 535,381.64, 738,888.41 and 320,521.58 is: 442,356.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,381.64 : 738,888.41 = 320,521.58 : x
  2. Step 2: Convert to fraction form
    535,381.64/738,888.41 = 320,521.58/x
  3. Step 3: Cross multiply
    535,381.64x = 738,888.41 × 320,521.58
  4. Step 4: Simplify right side
    535,381.64x = 236,829,680,616.89
  5. Step 5: Solve for x
    x = 236,829,680,616.89/535,381.64
  6. Step 6: Final answer
    x = 442,356.75

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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.