Home / 912,175.20-1,368,409.68-281,088.72

Finding the Fourth Proportional to 912,175.20, 1,368,409.68 and 281,088.72

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Solution

The fourth proportional to 912,175.20, 1,368,409.68 and 281,088.72 is: 421,678.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,175.20 : 1,368,409.68 = 281,088.72 : x
  2. Step 2: Convert to fraction form
    912,175.20/1,368,409.68 = 281,088.72/x
  3. Step 3: Cross multiply
    912,175.20x = 1,368,409.68 × 281,088.72
  4. Step 4: Simplify right side
    912,175.20x = 384,644,525,386.81
  5. Step 5: Solve for x
    x = 384,644,525,386.81/912,175.20
  6. Step 6: Final answer
    x = 421,678.34

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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.