Home / 387,720.42-581,483.40-275,072.10

Finding the Fourth Proportional to 387,720.42, 581,483.40 and 275,072.10

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Solution

The fourth proportional to 387,720.42, 581,483.40 and 275,072.10 is: 412,539.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,720.42 : 581,483.40 = 275,072.10 : x
  2. Step 2: Convert to fraction form
    387,720.42/581,483.40 = 275,072.10/x
  3. Step 3: Cross multiply
    387,720.42x = 581,483.40 × 275,072.10
  4. Step 4: Simplify right side
    387,720.42x = 159,949,859,953.14
  5. Step 5: Solve for x
    x = 159,949,859,953.14/387,720.42
  6. Step 6: Final answer
    x = 412,539.17

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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.