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Finding the Fourth Proportional to 450,643.52, 621,225.51 and 343,026.11

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Solution

The fourth proportional to 450,643.52, 621,225.51 and 343,026.11 is: 472,871.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,643.52 : 621,225.51 = 343,026.11 : x
  2. Step 2: Convert to fraction form
    450,643.52/621,225.51 = 343,026.11/x
  3. Step 3: Cross multiply
    450,643.52x = 621,225.51 × 343,026.11
  4. Step 4: Simplify right side
    450,643.52x = 213,096,570,128.07
  5. Step 5: Solve for x
    x = 213,096,570,128.07/450,643.52
  6. Step 6: Final answer
    x = 472,871.71

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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.