Home / 764,149.80-1,054,537.65-420,017.55

Finding the Fourth Proportional to 764,149.80, 1,054,537.65 and 420,017.55

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Solution

The fourth proportional to 764,149.80, 1,054,537.65 and 420,017.55 is: 579,630.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,149.80 : 1,054,537.65 = 420,017.55 : x
  2. Step 2: Convert to fraction form
    764,149.80/1,054,537.65 = 420,017.55/x
  3. Step 3: Cross multiply
    764,149.80x = 1,054,537.65 × 420,017.55
  4. Step 4: Simplify right side
    764,149.80x = 442,924,320,341.05
  5. Step 5: Solve for x
    x = 442,924,320,341.05/764,149.80
  6. Step 6: Final answer
    x = 579,630.22

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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.