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Finding the Fourth Proportional to 709,894.17, 979,646.54 and 387,603.27

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Solution

The fourth proportional to 709,894.17, 979,646.54 and 387,603.27 is: 534,888.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,894.17 : 979,646.54 = 387,603.27 : x
  2. Step 2: Convert to fraction form
    709,894.17/979,646.54 = 387,603.27/x
  3. Step 3: Cross multiply
    709,894.17x = 979,646.54 × 387,603.27
  4. Step 4: Simplify right side
    709,894.17x = 379,714,200,410.17
  5. Step 5: Solve for x
    x = 379,714,200,410.17/709,894.17
  6. Step 6: Final answer
    x = 534,888.46

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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.