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Finding the Fourth Proportional to 720,223.02, 993,880.98 and 397,926.18

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Solution

The fourth proportional to 720,223.02, 993,880.98 and 397,926.18 is: 549,123.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,223.02 : 993,880.98 = 397,926.18 : x
  2. Step 2: Convert to fraction form
    720,223.02/993,880.98 = 397,926.18/x
  3. Step 3: Cross multiply
    720,223.02x = 993,880.98 × 397,926.18
  4. Step 4: Simplify right side
    720,223.02x = 395,491,261,746.06
  5. Step 5: Solve for x
    x = 395,491,261,746.06/720,223.02
  6. Step 6: Final answer
    x = 549,123.33

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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.