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Finding the Fourth Proportional to 707,328.23, 976,113.08 and 385,040.73

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Solution

The fourth proportional to 707,328.23, 976,113.08 and 385,040.73 is: 531,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,328.23 : 976,113.08 = 385,040.73 : x
  2. Step 2: Convert to fraction form
    707,328.23/976,113.08 = 385,040.73/x
  3. Step 3: Cross multiply
    707,328.23x = 976,113.08 × 385,040.73
  4. Step 4: Simplify right side
    707,328.23x = 375,843,290,960.55
  5. Step 5: Solve for x
    x = 375,843,290,960.55/707,328.23
  6. Step 6: Final answer
    x = 531,356.28

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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.