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Finding the Fourth Proportional to 720,566.60, 994,364.55 and 393,864.93

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Solution

The fourth proportional to 720,566.60, 994,364.55 and 393,864.93 is: 543,524.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,566.60 : 994,364.55 = 393,864.93 : x
  2. Step 2: Convert to fraction form
    720,566.60/994,364.55 = 393,864.93/x
  3. Step 3: Cross multiply
    720,566.60x = 994,364.55 × 393,864.93
  4. Step 4: Simplify right side
    720,566.60x = 391,645,323,880.23
  5. Step 5: Solve for x
    x = 391,645,323,880.23/720,566.60
  6. Step 6: Final answer
    x = 543,524.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.