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Finding the Fourth Proportional to 692,402.50, 955,548.46 and 390,596.50

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Solution

The fourth proportional to 692,402.50, 955,548.46 and 390,596.50 is: 539,041.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,402.50 : 955,548.46 = 390,596.50 : x
  2. Step 2: Convert to fraction form
    692,402.50/955,548.46 = 390,596.50/x
  3. Step 3: Cross multiply
    692,402.50x = 955,548.46 × 390,596.50
  4. Step 4: Simplify right side
    692,402.50x = 373,233,884,056.39
  5. Step 5: Solve for x
    x = 373,233,884,056.39/692,402.50
  6. Step 6: Final answer
    x = 539,041.79

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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.