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Finding the Fourth Proportional to 705,818.50, 974,029.53 and 387,866.50

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Solution

The fourth proportional to 705,818.50, 974,029.53 and 387,866.50 is: 535,255.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,818.50 : 974,029.53 = 387,866.50 : x
  2. Step 2: Convert to fraction form
    705,818.50/974,029.53 = 387,866.50/x
  3. Step 3: Cross multiply
    705,818.50x = 974,029.53 × 387,866.50
  4. Step 4: Simplify right side
    705,818.50x = 377,793,424,697.75
  5. Step 5: Solve for x
    x = 377,793,424,697.75/705,818.50
  6. Step 6: Final answer
    x = 535,255.77

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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.