Home / 471,815.57-651,132.72-355,320.45

Finding the Fourth Proportional to 471,815.57, 651,132.72 and 355,320.45

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Solution

The fourth proportional to 471,815.57, 651,132.72 and 355,320.45 is: 490,362.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,815.57 : 651,132.72 = 355,320.45 : x
  2. Step 2: Convert to fraction form
    471,815.57/651,132.72 = 355,320.45/x
  3. Step 3: Cross multiply
    471,815.57x = 651,132.72 × 355,320.45
  4. Step 4: Simplify right side
    471,815.57x = 231,360,771,080.12
  5. Step 5: Solve for x
    x = 231,360,771,080.12/471,815.57
  6. Step 6: Final answer
    x = 490,362.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.