Home / 722,210.37-996,638.05-399,913.55

Finding the Fourth Proportional to 722,210.37, 996,638.05 and 399,913.55

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Solution

The fourth proportional to 722,210.37, 996,638.05 and 399,913.55 is: 551,873.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,210.37 : 996,638.05 = 399,913.55 : x
  2. Step 2: Convert to fraction form
    722,210.37/996,638.05 = 399,913.55/x
  3. Step 3: Cross multiply
    722,210.37x = 996,638.05 × 399,913.55
  4. Step 4: Simplify right side
    722,210.37x = 398,569,060,640.58
  5. Step 5: Solve for x
    x = 398,569,060,640.58/722,210.37
  6. Step 6: Final answer
    x = 551,873.91

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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.