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Finding the Fourth Proportional to 489,482.70, 734,760.54 and 388,927.20

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Solution

The fourth proportional to 489,482.70, 734,760.54 and 388,927.20 is: 583,817.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,482.70 : 734,760.54 = 388,927.20 : x
  2. Step 2: Convert to fraction form
    489,482.70/734,760.54 = 388,927.20/x
  3. Step 3: Cross multiply
    489,482.70x = 734,760.54 × 388,927.20
  4. Step 4: Simplify right side
    489,482.70x = 285,768,359,492.69
  5. Step 5: Solve for x
    x = 285,768,359,492.69/489,482.70
  6. Step 6: Final answer
    x = 583,817.08

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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.