Home / 645,848.40-968,335.20-330,045.60

Finding the Fourth Proportional to 645,848.40, 968,335.20 and 330,045.60

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Solution

The fourth proportional to 645,848.40, 968,335.20 and 330,045.60 is: 494,844.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,848.40 : 968,335.20 = 330,045.60 : x
  2. Step 2: Convert to fraction form
    645,848.40/968,335.20 = 330,045.60/x
  3. Step 3: Cross multiply
    645,848.40x = 968,335.20 × 330,045.60
  4. Step 4: Simplify right side
    645,848.40x = 319,594,772,085.12
  5. Step 5: Solve for x
    x = 319,594,772,085.12/645,848.40
  6. Step 6: Final answer
    x = 494,844.88

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Double scale
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Similar ratio
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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.