Home / 645,639.60-968,459.40-433,063.20

Finding the Fourth Proportional to 645,639.60, 968,459.40 and 433,063.20

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Solution

The fourth proportional to 645,639.60, 968,459.40 and 433,063.20 is: 649,594.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,639.60 : 968,459.40 = 433,063.20 : x
  2. Step 2: Convert to fraction form
    645,639.60/968,459.40 = 433,063.20/x
  3. Step 3: Cross multiply
    645,639.60x = 968,459.40 × 433,063.20
  4. Step 4: Simplify right side
    645,639.60x = 419,404,126,834.08
  5. Step 5: Solve for x
    x = 419,404,126,834.08/645,639.60
  6. Step 6: Final answer
    x = 649,594.80

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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.