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Finding the Fourth Proportional to 710,282.99, 980,174.42 and 387,994.52

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Solution

The fourth proportional to 710,282.99, 980,174.42 and 387,994.52 is: 535,423.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,282.99 : 980,174.42 = 387,994.52 : x
  2. Step 2: Convert to fraction form
    710,282.99/980,174.42 = 387,994.52/x
  3. Step 3: Cross multiply
    710,282.99x = 980,174.42 × 387,994.52
  4. Step 4: Simplify right side
    710,282.99x = 380,302,305,569.62
  5. Step 5: Solve for x
    x = 380,302,305,569.62/710,282.99
  6. Step 6: Final answer
    x = 535,423.64

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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.