Home / 9,872,904.78-13,619,124.81-5,742,470.97

Finding the Fourth Proportional to 9,872,904.78, 13,619,124.81 and 5,742,470.97

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Solution

The fourth proportional to 9,872,904.78, 13,619,124.81 and 5,742,470.97 is: 7,921,420.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,872,904.78 : 13,619,124.81 = 5,742,470.97 : x
  2. Step 2: Convert to fraction form
    9,872,904.78/13,619,124.81 = 5,742,470.97/x
  3. Step 3: Cross multiply
    9,872,904.78x = 13,619,124.81 × 5,742,470.97
  4. Step 4: Simplify right side
    9,872,904.78x = 78,207,428,858,231.77
  5. Step 5: Solve for x
    x = 78,207,428,858,231.77/9,872,904.78
  6. Step 6: Final answer
    x = 7,921,420.35

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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.