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Finding the Fourth Proportional to 707,685.04, 976,628.10 and 385,408.72

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Solution

The fourth proportional to 707,685.04, 976,628.10 and 385,408.72 is: 531,876.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,685.04 : 976,628.10 = 385,408.72 : x
  2. Step 2: Convert to fraction form
    707,685.04/976,628.10 = 385,408.72/x
  3. Step 3: Cross multiply
    707,685.04x = 976,628.10 × 385,408.72
  4. Step 4: Simplify right side
    707,685.04x = 376,400,985,937.03
  5. Step 5: Solve for x
    x = 376,400,985,937.03/707,685.04
  6. Step 6: Final answer
    x = 531,876.42

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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.