Home / 764,681.12-1,055,277.24-420,495.40

Finding the Fourth Proportional to 764,681.12, 1,055,277.24 and 420,495.40

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Solution

The fourth proportional to 764,681.12, 1,055,277.24 and 420,495.40 is: 580,293.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,681.12 : 1,055,277.24 = 420,495.40 : x
  2. Step 2: Convert to fraction form
    764,681.12/1,055,277.24 = 420,495.40/x
  3. Step 3: Cross multiply
    764,681.12x = 1,055,277.24 × 420,495.40
  4. Step 4: Simplify right side
    764,681.12x = 443,739,225,144.70
  5. Step 5: Solve for x
    x = 443,739,225,144.70/764,681.12
  6. Step 6: Final answer
    x = 580,293.16

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1.5x scale

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.