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Finding the Fourth Proportional to 712,009.41, 982,575 and 389,722.02

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Solution

The fourth proportional to 712,009.41, 982,575 and 389,722.02 is: 537,817.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,009.41 : 982,575 = 389,722.02 : x
  2. Step 2: Convert to fraction form
    712,009.41/982,575 = 389,722.02/x
  3. Step 3: Cross multiply
    712,009.41x = 982,575 × 389,722.02
  4. Step 4: Simplify right side
    712,009.41x = 382,931,113,801.50
  5. Step 5: Solve for x
    x = 382,931,113,801.50/712,009.41
  6. Step 6: Final answer
    x = 537,817.49

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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.