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Finding the Fourth Proportional to 711,374.40, 981,828 and 457,043.52

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Solution

The fourth proportional to 711,374.40, 981,828 and 457,043.52 is: 630,804.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,374.40 : 981,828 = 457,043.52 : x
  2. Step 2: Convert to fraction form
    711,374.40/981,828 = 457,043.52/x
  3. Step 3: Cross multiply
    711,374.40x = 981,828 × 457,043.52
  4. Step 4: Simplify right side
    711,374.40x = 448,738,125,154.56
  5. Step 5: Solve for x
    x = 448,738,125,154.56/711,374.40
  6. Step 6: Final answer
    x = 630,804.43

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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.