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Finding the Fourth Proportional to 710,180.86, 980,049.58 and 387,891.72

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Solution

The fourth proportional to 710,180.86, 980,049.58 and 387,891.72 is: 535,290.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,180.86 : 980,049.58 = 387,891.72 : x
  2. Step 2: Convert to fraction form
    710,180.86/980,049.58 = 387,891.72/x
  3. Step 3: Cross multiply
    710,180.86x = 980,049.58 × 387,891.72
  4. Step 4: Simplify right side
    710,180.86x = 380,153,117,271.48
  5. Step 5: Solve for x
    x = 380,153,117,271.48/710,180.86
  6. Step 6: Final answer
    x = 535,290.57

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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.