Home / 912,124.89-1,368,408.78-281,038.68

Finding the Fourth Proportional to 912,124.89, 1,368,408.78 and 281,038.68

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Solution

The fourth proportional to 912,124.89, 1,368,408.78 and 281,038.68 is: 421,626.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,124.89 : 1,368,408.78 = 281,038.68 : x
  2. Step 2: Convert to fraction form
    912,124.89/1,368,408.78 = 281,038.68/x
  3. Step 3: Cross multiply
    912,124.89x = 1,368,408.78 × 281,038.68
  4. Step 4: Simplify right side
    912,124.89x = 384,575,797,231.61
  5. Step 5: Solve for x
    x = 384,575,797,231.61/912,124.89
  6. Step 6: Final answer
    x = 421,626.25

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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.