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Finding the Fourth Proportional to 531,091.78, 732,897.40 and 289,376.34

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Solution

The fourth proportional to 531,091.78, 732,897.40 and 289,376.34 is: 399,334.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,091.78 : 732,897.40 = 289,376.34 : x
  2. Step 2: Convert to fraction form
    531,091.78/732,897.40 = 289,376.34/x
  3. Step 3: Cross multiply
    531,091.78x = 732,897.40 × 289,376.34
  4. Step 4: Simplify right side
    531,091.78x = 212,083,167,207.52
  5. Step 5: Solve for x
    x = 212,083,167,207.52/531,091.78
  6. Step 6: Final answer
    x = 399,334.31

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1.5x scale

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.