Home / 690,660.74-1,036,132.05-291,300.77

Finding the Fourth Proportional to 690,660.74, 1,036,132.05 and 291,300.77

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Solution

The fourth proportional to 690,660.74, 1,036,132.05 and 291,300.77 is: 437,010.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,660.74 : 1,036,132.05 = 291,300.77 : x
  2. Step 2: Convert to fraction form
    690,660.74/1,036,132.05 = 291,300.77/x
  3. Step 3: Cross multiply
    690,660.74x = 1,036,132.05 × 291,300.77
  4. Step 4: Simplify right side
    690,660.74x = 301,826,063,986.68
  5. Step 5: Solve for x
    x = 301,826,063,986.68/690,660.74
  6. Step 6: Final answer
    x = 437,010.60

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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.