Home / 1,315,709.19-1,815,577.34-742,805.91

Finding the Fourth Proportional to 1,315,709.19, 1,815,577.34 and 742,805.91

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Solution

The fourth proportional to 1,315,709.19, 1,815,577.34 and 742,805.91 is: 1,025,014.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,709.19 : 1,815,577.34 = 742,805.91 : x
  2. Step 2: Convert to fraction form
    1,315,709.19/1,815,577.34 = 742,805.91/x
  3. Step 3: Cross multiply
    1,315,709.19x = 1,815,577.34 × 742,805.91
  4. Step 4: Simplify right side
    1,315,709.19x = 1,348,621,574,500.05
  5. Step 5: Solve for x
    x = 1,348,621,574,500.05/1,315,709.19
  6. Step 6: Final answer
    x = 1,025,014.94

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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.