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Finding the Fourth Proportional to 710,152.14, 979,994.78 and 387,863.50

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Solution

The fourth proportional to 710,152.14, 979,994.78 and 387,863.50 is: 535,243.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,152.14 : 979,994.78 = 387,863.50 : x
  2. Step 2: Convert to fraction form
    710,152.14/979,994.78 = 387,863.50/x
  3. Step 3: Cross multiply
    710,152.14x = 979,994.78 × 387,863.50
  4. Step 4: Simplify right side
    710,152.14x = 380,104,205,352.53
  5. Step 5: Solve for x
    x = 380,104,205,352.53/710,152.14
  6. Step 6: Final answer
    x = 535,243.34

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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.