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Finding the Fourth Proportional to 712,045.04, 982,647.08 and 389,755.36

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Solution

The fourth proportional to 712,045.04, 982,647.08 and 389,755.36 is: 537,876.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,045.04 : 982,647.08 = 389,755.36 : x
  2. Step 2: Convert to fraction form
    712,045.04/982,647.08 = 389,755.36/x
  3. Step 3: Cross multiply
    712,045.04x = 982,647.08 × 389,755.36
  4. Step 4: Simplify right side
    712,045.04x = 382,991,966,418.35
  5. Step 5: Solve for x
    x = 382,991,966,418.35/712,045.04
  6. Step 6: Final answer
    x = 537,876.04

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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.