Home / 645,349.06-968,290.08-285,330.79

Finding the Fourth Proportional to 645,349.06, 968,290.08 and 285,330.79

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Solution

The fourth proportional to 645,349.06, 968,290.08 and 285,330.79 is: 428,114.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,349.06 : 968,290.08 = 285,330.79 : x
  2. Step 2: Convert to fraction form
    645,349.06/968,290.08 = 285,330.79/x
  3. Step 3: Cross multiply
    645,349.06x = 968,290.08 × 285,330.79
  4. Step 4: Simplify right side
    645,349.06x = 276,282,973,475.56
  5. Step 5: Solve for x
    x = 276,282,973,475.56/645,349.06
  6. Step 6: Final answer
    x = 428,114.01

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1.5x scale

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.