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Finding the Fourth Proportional to 690,242.79, 952,525.95 and 399,893.94

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Solution

The fourth proportional to 690,242.79, 952,525.95 and 399,893.94 is: 551,848.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,242.79 : 952,525.95 = 399,893.94 : x
  2. Step 2: Convert to fraction form
    690,242.79/952,525.95 = 399,893.94/x
  3. Step 3: Cross multiply
    690,242.79x = 952,525.95 × 399,893.94
  4. Step 4: Simplify right side
    690,242.79x = 380,909,355,097.74
  5. Step 5: Solve for x
    x = 380,909,355,097.74/690,242.79
  6. Step 6: Final answer
    x = 551,848.36

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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.