Home / 742,145.40-1,113,254.55-387,851.40

Finding the Fourth Proportional to 742,145.40, 1,113,254.55 and 387,851.40

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Solution

The fourth proportional to 742,145.40, 1,113,254.55 and 387,851.40 is: 581,796.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,145.40 : 1,113,254.55 = 387,851.40 : x
  2. Step 2: Convert to fraction form
    742,145.40/1,113,254.55 = 387,851.40/x
  3. Step 3: Cross multiply
    742,145.40x = 1,113,254.55 × 387,851.40
  4. Step 4: Simplify right side
    742,145.40x = 431,777,335,773.87
  5. Step 5: Solve for x
    x = 431,777,335,773.87/742,145.40
  6. Step 6: Final answer
    x = 581,796.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.