Home / 1,315,716.71-1,815,688.78-742,756.86

Finding the Fourth Proportional to 1,315,716.71, 1,815,688.78 and 742,756.86

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Solution

The fourth proportional to 1,315,716.71, 1,815,688.78 and 742,756.86 is: 1,025,004.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,716.71 : 1,815,688.78 = 742,756.86 : x
  2. Step 2: Convert to fraction form
    1,315,716.71/1,815,688.78 = 742,756.86/x
  3. Step 3: Cross multiply
    1,315,716.71x = 1,815,688.78 × 742,756.86
  4. Step 4: Simplify right side
    1,315,716.71x = 1,348,615,295,113.14
  5. Step 5: Solve for x
    x = 1,348,615,295,113.14/1,315,716.71
  6. Step 6: Final answer
    x = 1,025,004.31

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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.