Home / 670,316.68-1,005,512.28-221,019.40

Finding the Fourth Proportional to 670,316.68, 1,005,512.28 and 221,019.40

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Solution

The fourth proportional to 670,316.68, 1,005,512.28 and 221,019.40 is: 331,541.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,316.68 : 1,005,512.28 = 221,019.40 : x
  2. Step 2: Convert to fraction form
    670,316.68/1,005,512.28 = 221,019.40/x
  3. Step 3: Cross multiply
    670,316.68x = 1,005,512.28 × 221,019.40
  4. Step 4: Simplify right side
    670,316.68x = 222,237,720,818.23
  5. Step 5: Solve for x
    x = 222,237,720,818.23/670,316.68
  6. Step 6: Final answer
    x = 331,541.39

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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.