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Finding the Fourth Proportional to 388,880.78, 583,530.30 and 374,726.19

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Solution

The fourth proportional to 388,880.78, 583,530.30 and 374,726.19 is: 562,290.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,880.78 : 583,530.30 = 374,726.19 : x
  2. Step 2: Convert to fraction form
    388,880.78/583,530.30 = 374,726.19/x
  3. Step 3: Cross multiply
    388,880.78x = 583,530.30 × 374,726.19
  4. Step 4: Simplify right side
    388,880.78x = 218,664,086,068.56
  5. Step 5: Solve for x
    x = 218,664,086,068.56/388,880.78
  6. Step 6: Final answer
    x = 562,290.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.