Home / 814,984.80-1,221,602.40-309,350.40

Finding the Fourth Proportional to 814,984.80, 1,221,602.40 and 309,350.40

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Solution

The fourth proportional to 814,984.80, 1,221,602.40 and 309,350.40 is: 463,693.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,984.80 : 1,221,602.40 = 309,350.40 : x
  2. Step 2: Convert to fraction form
    814,984.80/1,221,602.40 = 309,350.40/x
  3. Step 3: Cross multiply
    814,984.80x = 1,221,602.40 × 309,350.40
  4. Step 4: Simplify right side
    814,984.80x = 377,903,191,080.96
  5. Step 5: Solve for x
    x = 377,903,191,080.96/814,984.80
  6. Step 6: Final answer
    x = 463,693.55

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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.