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Finding the Fourth Proportional to 693,148.41, 956,510.55 and 387,163.89

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Solution

The fourth proportional to 693,148.41, 956,510.55 and 387,163.89 is: 534,267.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,148.41 : 956,510.55 = 387,163.89 : x
  2. Step 2: Convert to fraction form
    693,148.41/956,510.55 = 387,163.89/x
  3. Step 3: Cross multiply
    693,148.41x = 956,510.55 × 387,163.89
  4. Step 4: Simplify right side
    693,148.41x = 370,326,345,364.04
  5. Step 5: Solve for x
    x = 370,326,345,364.04/693,148.41
  6. Step 6: Final answer
    x = 534,267.03

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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.