Home / 690,749.65-1,036,235.22-291,449.27

Finding the Fourth Proportional to 690,749.65, 1,036,235.22 and 291,449.27

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Solution

The fourth proportional to 690,749.65, 1,036,235.22 and 291,449.27 is: 437,220.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,749.65 : 1,036,235.22 = 291,449.27 : x
  2. Step 2: Convert to fraction form
    690,749.65/1,036,235.22 = 291,449.27/x
  3. Step 3: Cross multiply
    690,749.65x = 1,036,235.22 × 291,449.27
  4. Step 4: Simplify right side
    690,749.65x = 302,009,998,417.29
  5. Step 5: Solve for x
    x = 302,009,998,417.29/690,749.65
  6. Step 6: Final answer
    x = 437,220.63

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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.