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Finding the Fourth Proportional to 702,777.60, 969,821.37 and 380,485.08

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Solution

The fourth proportional to 702,777.60, 969,821.37 and 380,485.08 is: 525,063.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,777.60 : 969,821.37 = 380,485.08 : x
  2. Step 2: Convert to fraction form
    702,777.60/969,821.37 = 380,485.08/x
  3. Step 3: Cross multiply
    702,777.60x = 969,821.37 × 380,485.08
  4. Step 4: Simplify right side
    702,777.60x = 369,002,561,550.16
  5. Step 5: Solve for x
    x = 369,002,561,550.16/702,777.60
  6. Step 6: Final answer
    x = 525,063.07

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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.