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Finding the Fourth Proportional to 722,885.03, 997,587.12 and 400,600.47

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Solution

The fourth proportional to 722,885.03, 997,587.12 and 400,600.47 is: 552,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,885.03 : 997,587.12 = 400,600.47 : x
  2. Step 2: Convert to fraction form
    722,885.03/997,587.12 = 400,600.47/x
  3. Step 3: Cross multiply
    722,885.03x = 997,587.12 × 400,600.47
  4. Step 4: Simplify right side
    722,885.03x = 399,633,869,137.95
  5. Step 5: Solve for x
    x = 399,633,869,137.95/722,885.03
  6. Step 6: Final answer
    x = 552,831.85

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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.