Home / 764,528.16-1,055,075.97-420,390.30

Finding the Fourth Proportional to 764,528.16, 1,055,075.97 and 420,390.30

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Solution

The fourth proportional to 764,528.16, 1,055,075.97 and 420,390.30 is: 580,153.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,528.16 : 1,055,075.97 = 420,390.30 : x
  2. Step 2: Convert to fraction form
    764,528.16/1,055,075.97 = 420,390.30/x
  3. Step 3: Cross multiply
    764,528.16x = 1,055,075.97 × 420,390.30
  4. Step 4: Simplify right side
    764,528.16x = 443,543,706,128.24
  5. Step 5: Solve for x
    x = 443,543,706,128.24/764,528.16
  6. Step 6: Final answer
    x = 580,153.53

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Double scale
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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.