Home / 693,153.03-1,039,828.72-213,421.42

Finding the Fourth Proportional to 693,153.03, 1,039,828.72 and 213,421.42

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Solution

The fourth proportional to 693,153.03, 1,039,828.72 and 213,421.42 is: 320,162.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,153.03 : 1,039,828.72 = 213,421.42 : x
  2. Step 2: Convert to fraction form
    693,153.03/1,039,828.72 = 213,421.42/x
  3. Step 3: Cross multiply
    693,153.03x = 1,039,828.72 × 213,421.42
  4. Step 4: Simplify right side
    693,153.03x = 221,921,716,780.04
  5. Step 5: Solve for x
    x = 221,921,716,780.04/693,153.03
  6. Step 6: Final answer
    x = 320,162.66

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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.