Home / 764,860.87-1,147,127.28-315,465.18

Finding the Fourth Proportional to 764,860.87, 1,147,127.28 and 315,465.18

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Solution

The fourth proportional to 764,860.87, 1,147,127.28 and 315,465.18 is: 473,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,860.87 : 1,147,127.28 = 315,465.18 : x
  2. Step 2: Convert to fraction form
    764,860.87/1,147,127.28 = 315,465.18/x
  3. Step 3: Cross multiply
    764,860.87x = 1,147,127.28 × 315,465.18
  4. Step 4: Simplify right side
    764,860.87x = 361,878,713,868.11
  5. Step 5: Solve for x
    x = 361,878,713,868.11/764,860.87
  6. Step 6: Final answer
    x = 473,130.12

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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.