Home / 764,302.95-1,054,751.18-420,153.38

Finding the Fourth Proportional to 764,302.95, 1,054,751.18 and 420,153.38

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Solution

The fourth proportional to 764,302.95, 1,054,751.18 and 420,153.38 is: 579,818.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,302.95 : 1,054,751.18 = 420,153.38 : x
  2. Step 2: Convert to fraction form
    764,302.95/1,054,751.18 = 420,153.38/x
  3. Step 3: Cross multiply
    764,302.95x = 1,054,751.18 × 420,153.38
  4. Step 4: Simplify right side
    764,302.95x = 443,157,265,961.47
  5. Step 5: Solve for x
    x = 443,157,265,961.47/764,302.95
  6. Step 6: Final answer
    x = 579,818.86

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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.