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Finding the Fourth Proportional to 710,740.44, 980,793.36 and 388,454.40

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Solution

The fourth proportional to 710,740.44, 980,793.36 and 388,454.40 is: 536,051.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,740.44 : 980,793.36 = 388,454.40 : x
  2. Step 2: Convert to fraction form
    710,740.44/980,793.36 = 388,454.40/x
  3. Step 3: Cross multiply
    710,740.44x = 980,793.36 × 388,454.40
  4. Step 4: Simplify right side
    710,740.44x = 380,993,496,182.78
  5. Step 5: Solve for x
    x = 380,993,496,182.78/710,740.44
  6. Step 6: Final answer
    x = 536,051.52

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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.