Home / 1,281,661.40-1,922,783.70-748,908.20

Finding the Fourth Proportional to 1,281,661.40, 1,922,783.70 and 748,908.20

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Solution

The fourth proportional to 1,281,661.40, 1,922,783.70 and 748,908.20 is: 1,123,532.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,661.40 : 1,922,783.70 = 748,908.20 : x
  2. Step 2: Convert to fraction form
    1,281,661.40/1,922,783.70 = 748,908.20/x
  3. Step 3: Cross multiply
    1,281,661.40x = 1,922,783.70 × 748,908.20
  4. Step 4: Simplify right side
    1,281,661.40x = 1,439,988,479,756.34
  5. Step 5: Solve for x
    x = 1,439,988,479,756.34/1,281,661.40
  6. Step 6: Final answer
    x = 1,123,532.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.