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Finding the Fourth Proportional to 644,202.76, 888,970.02 and 357,741.16

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Solution

The fourth proportional to 644,202.76, 888,970.02 and 357,741.16 is: 493,666.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,202.76 : 888,970.02 = 357,741.16 : x
  2. Step 2: Convert to fraction form
    644,202.76/888,970.02 = 357,741.16/x
  3. Step 3: Cross multiply
    644,202.76x = 888,970.02 × 357,741.16
  4. Step 4: Simplify right side
    644,202.76x = 318,021,166,160.02
  5. Step 5: Solve for x
    x = 318,021,166,160.02/644,202.76
  6. Step 6: Final answer
    x = 493,666.26

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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.