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Finding the Fourth Proportional to 710,217.72, 980,094.63 and 387,928.02

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Solution

The fourth proportional to 710,217.72, 980,094.63 and 387,928.02 is: 535,337.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,217.72 : 980,094.63 = 387,928.02 : x
  2. Step 2: Convert to fraction form
    710,217.72/980,094.63 = 387,928.02/x
  3. Step 3: Cross multiply
    710,217.72x = 980,094.63 × 387,928.02
  4. Step 4: Simplify right side
    710,217.72x = 380,206,169,228.53
  5. Step 5: Solve for x
    x = 380,206,169,228.53/710,217.72
  6. Step 6: Final answer
    x = 535,337.49

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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.