Home / 693,609.40-1,038,638.58-480,082.06

Finding the Fourth Proportional to 693,609.40, 1,038,638.58 and 480,082.06

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Solution

The fourth proportional to 693,609.40, 1,038,638.58 and 480,082.06 is: 718,894.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,609.40 : 1,038,638.58 = 480,082.06 : x
  2. Step 2: Convert to fraction form
    693,609.40/1,038,638.58 = 480,082.06/x
  3. Step 3: Cross multiply
    693,609.40x = 1,038,638.58 × 480,082.06
  4. Step 4: Simplify right side
    693,609.40x = 498,631,749,081.88
  5. Step 5: Solve for x
    x = 498,631,749,081.88/693,609.40
  6. Step 6: Final answer
    x = 718,894.16

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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.