Home / 413,875.20-620,985.60-133,478.40

Finding the Fourth Proportional to 413,875.20, 620,985.60 and 133,478.40

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Solution

The fourth proportional to 413,875.20, 620,985.60 and 133,478.40 is: 200,273.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,875.20 : 620,985.60 = 133,478.40 : x
  2. Step 2: Convert to fraction form
    413,875.20/620,985.60 = 133,478.40/x
  3. Step 3: Cross multiply
    413,875.20x = 620,985.60 × 133,478.40
  4. Step 4: Simplify right side
    413,875.20x = 82,888,164,311.04
  5. Step 5: Solve for x
    x = 82,888,164,311.04/413,875.20
  6. Step 6: Final answer
    x = 200,273.33

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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.