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Finding the Fourth Proportional to 722,223.54, 996,570.74 and 399,925.35

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Solution

The fourth proportional to 722,223.54, 996,570.74 and 399,925.35 is: 551,842.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,223.54 : 996,570.74 = 399,925.35 : x
  2. Step 2: Convert to fraction form
    722,223.54/996,570.74 = 399,925.35/x
  3. Step 3: Cross multiply
    722,223.54x = 996,570.74 × 399,925.35
  4. Step 4: Simplify right side
    722,223.54x = 398,553,901,994.26
  5. Step 5: Solve for x
    x = 398,553,901,994.26/722,223.54
  6. Step 6: Final answer
    x = 551,842.86

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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.