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Finding the Fourth Proportional to 872,409.32, 1,204,842.71 and 777,309.45

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Solution

The fourth proportional to 872,409.32, 1,204,842.71 and 777,309.45 is: 1,073,504.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,409.32 : 1,204,842.71 = 777,309.45 : x
  2. Step 2: Convert to fraction form
    872,409.32/1,204,842.71 = 777,309.45/x
  3. Step 3: Cross multiply
    872,409.32x = 1,204,842.71 × 777,309.45
  4. Step 4: Simplify right side
    872,409.32x = 936,535,624,246.61
  5. Step 5: Solve for x
    x = 936,535,624,246.61/872,409.32
  6. Step 6: Final answer
    x = 1,073,504.84

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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.