Home / 906,777.28-1,251,352.70-498,870.39

Finding the Fourth Proportional to 906,777.28, 1,251,352.70 and 498,870.39

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Solution

The fourth proportional to 906,777.28, 1,251,352.70 and 498,870.39 is: 688,441.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,777.28 : 1,251,352.70 = 498,870.39 : x
  2. Step 2: Convert to fraction form
    906,777.28/1,251,352.70 = 498,870.39/x
  3. Step 3: Cross multiply
    906,777.28x = 1,251,352.70 × 498,870.39
  4. Step 4: Simplify right side
    906,777.28x = 624,262,809,476.55
  5. Step 5: Solve for x
    x = 624,262,809,476.55/906,777.28
  6. Step 6: Final answer
    x = 688,441.17

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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.