Home / 1,390,010.47-1,917,225.37-1,275,658.46

Finding the Fourth Proportional to 1,390,010.47, 1,917,225.37 and 1,275,658.46

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Solution

The fourth proportional to 1,390,010.47, 1,917,225.37 and 1,275,658.46 is: 1,759,500.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,010.47 : 1,917,225.37 = 1,275,658.46 : x
  2. Step 2: Convert to fraction form
    1,390,010.47/1,917,225.37 = 1,275,658.46/x
  3. Step 3: Cross multiply
    1,390,010.47x = 1,917,225.37 × 1,275,658.46
  4. Step 4: Simplify right side
    1,390,010.47x = 2,445,724,764,571.05
  5. Step 5: Solve for x
    x = 2,445,724,764,571.05/1,390,010.47
  6. Step 6: Final answer
    x = 1,759,500.97

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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.