Home / 1,315,205.10-1,815,007.05-742,134.60

Finding the Fourth Proportional to 1,315,205.10, 1,815,007.05 and 742,134.60

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Solution

The fourth proportional to 1,315,205.10, 1,815,007.05 and 742,134.60 is: 1,024,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,205.10 : 1,815,007.05 = 742,134.60 : x
  2. Step 2: Convert to fraction form
    1,315,205.10/1,815,007.05 = 742,134.60/x
  3. Step 3: Cross multiply
    1,315,205.10x = 1,815,007.05 × 742,134.60
  4. Step 4: Simplify right side
    1,315,205.10x = 1,346,979,531,048.93
  5. Step 5: Solve for x
    x = 1,346,979,531,048.93/1,315,205.10
  6. Step 6: Final answer
    x = 1,024,159.30

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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.