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Finding the Fourth Proportional to 645,758.56, 968,628.12 and 290,521.72

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Solution

The fourth proportional to 645,758.56, 968,628.12 and 290,521.72 is: 435,778.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,758.56 : 968,628.12 = 290,521.72 : x
  2. Step 2: Convert to fraction form
    645,758.56/968,628.12 = 290,521.72/x
  3. Step 3: Cross multiply
    645,758.56x = 968,628.12 × 290,521.72
  4. Step 4: Simplify right side
    645,758.56x = 281,407,507,462.77
  5. Step 5: Solve for x
    x = 281,407,507,462.77/645,758.56
  6. Step 6: Final answer
    x = 435,778.21

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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.