Home / 645,624.60-968,145.30-290,455.80

Finding the Fourth Proportional to 645,624.60, 968,145.30 and 290,455.80

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Solution

The fourth proportional to 645,624.60, 968,145.30 and 290,455.80 is: 435,552.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,624.60 : 968,145.30 = 290,455.80 : x
  2. Step 2: Convert to fraction form
    645,624.60/968,145.30 = 290,455.80/x
  3. Step 3: Cross multiply
    645,624.60x = 968,145.30 × 290,455.80
  4. Step 4: Simplify right side
    645,624.60x = 281,203,417,627.74
  5. Step 5: Solve for x
    x = 281,203,417,627.74/645,624.60
  6. Step 6: Final answer
    x = 435,552.51

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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.