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Finding the Fourth Proportional to 722,417.84, 996,925.64 and 395,728.24

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Solution

The fourth proportional to 722,417.84, 996,925.64 and 395,728.24 is: 546,098.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,417.84 : 996,925.64 = 395,728.24 : x
  2. Step 2: Convert to fraction form
    722,417.84/996,925.64 = 395,728.24/x
  3. Step 3: Cross multiply
    722,417.84x = 996,925.64 × 395,728.24
  4. Step 4: Simplify right side
    722,417.84x = 394,511,628,928.07
  5. Step 5: Solve for x
    x = 394,511,628,928.07/722,417.84
  6. Step 6: Final answer
    x = 546,098.96

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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.