Home / 690,740.22-1,036,221.09-291,439.82

Finding the Fourth Proportional to 690,740.22, 1,036,221.09 and 291,439.82

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Solution

The fourth proportional to 690,740.22, 1,036,221.09 and 291,439.82 is: 437,206.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,740.22 : 1,036,221.09 = 291,439.82 : x
  2. Step 2: Convert to fraction form
    690,740.22/1,036,221.09 = 291,439.82/x
  3. Step 3: Cross multiply
    690,740.22x = 1,036,221.09 × 291,439.82
  4. Step 4: Simplify right side
    690,740.22x = 301,996,089,447.46
  5. Step 5: Solve for x
    x = 301,996,089,447.46/690,740.22
  6. Step 6: Final answer
    x = 437,206.46

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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.