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Finding the Fourth Proportional to 659,452.51, 909,755.52 and 387,397.67

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Solution

The fourth proportional to 659,452.51, 909,755.52 and 387,397.67 is: 534,439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,452.51 : 909,755.52 = 387,397.67 : x
  2. Step 2: Convert to fraction form
    659,452.51/909,755.52 = 387,397.67/x
  3. Step 3: Cross multiply
    659,452.51x = 909,755.52 × 387,397.67
  4. Step 4: Simplify right side
    659,452.51x = 352,437,168,717.64
  5. Step 5: Solve for x
    x = 352,437,168,717.64/659,452.51
  6. Step 6: Final answer
    x = 534,439.05

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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.