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Finding the Fourth Proportional to 680,502, 939,092.76 and 378,696.24

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Solution

The fourth proportional to 680,502, 939,092.76 and 378,696.24 is: 522,600.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,502 : 939,092.76 = 378,696.24 : x
  2. Step 2: Convert to fraction form
    680,502/939,092.76 = 378,696.24/x
  3. Step 3: Cross multiply
    680,502x = 939,092.76 × 378,696.24
  4. Step 4: Simplify right side
    680,502x = 355,630,897,223.22
  5. Step 5: Solve for x
    x = 355,630,897,223.22/680,502
  6. Step 6: Final answer
    x = 522,600.81

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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.