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Finding the Fourth Proportional to 644,671.18, 888,722.31 and 453,089.98

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Solution

The fourth proportional to 644,671.18, 888,722.31 and 453,089.98 is: 624,614.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,671.18 : 888,722.31 = 453,089.98 : x
  2. Step 2: Convert to fraction form
    644,671.18/888,722.31 = 453,089.98/x
  3. Step 3: Cross multiply
    644,671.18x = 888,722.31 × 453,089.98
  4. Step 4: Simplify right side
    644,671.18x = 402,671,173,663.45
  5. Step 5: Solve for x
    x = 402,671,173,663.45/644,671.18
  6. Step 6: Final answer
    x = 624,614.82

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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.