Home / 1,557,047.70-2,148,320.58-912,121.90

Finding the Fourth Proportional to 1,557,047.70, 2,148,320.58 and 912,121.90

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Solution

The fourth proportional to 1,557,047.70, 2,148,320.58 and 912,121.90 is: 1,258,490.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,047.70 : 2,148,320.58 = 912,121.90 : x
  2. Step 2: Convert to fraction form
    1,557,047.70/2,148,320.58 = 912,121.90/x
  3. Step 3: Cross multiply
    1,557,047.70x = 2,148,320.58 × 912,121.90
  4. Step 4: Simplify right side
    1,557,047.70x = 1,959,530,249,238.70
  5. Step 5: Solve for x
    x = 1,959,530,249,238.70/1,557,047.70
  6. Step 6: Final answer
    x = 1,258,490.83

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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.