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Finding the Fourth Proportional to 697,990.48, 963,250.24 and 387,906.12

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Solution

The fourth proportional to 697,990.48, 963,250.24 and 387,906.12 is: 535,323.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,990.48 : 963,250.24 = 387,906.12 : x
  2. Step 2: Convert to fraction form
    697,990.48/963,250.24 = 387,906.12/x
  3. Step 3: Cross multiply
    697,990.48x = 963,250.24 × 387,906.12
  4. Step 4: Simplify right side
    697,990.48x = 373,650,663,187.47
  5. Step 5: Solve for x
    x = 373,650,663,187.47/697,990.48
  6. Step 6: Final answer
    x = 535,323.44

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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.