Home / 645,637.64-968,448.60-290,400.80

Finding the Fourth Proportional to 645,637.64, 968,448.60 and 290,400.80

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Solution

The fourth proportional to 645,637.64, 968,448.60 and 290,400.80 is: 435,597.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,637.64 : 968,448.60 = 290,400.80 : x
  2. Step 2: Convert to fraction form
    645,637.64/968,448.60 = 290,400.80/x
  3. Step 3: Cross multiply
    645,637.64x = 968,448.60 × 290,400.80
  4. Step 4: Simplify right side
    645,637.64x = 281,238,248,198.88
  5. Step 5: Solve for x
    x = 281,238,248,198.88/645,637.64
  6. Step 6: Final answer
    x = 435,597.66

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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.