Home / 714,219.61-985,638.12-391,926.89

Finding the Fourth Proportional to 714,219.61, 985,638.12 and 391,926.89

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Solution

The fourth proportional to 714,219.61, 985,638.12 and 391,926.89 is: 540,867.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,219.61 : 985,638.12 = 391,926.89 : x
  2. Step 2: Convert to fraction form
    714,219.61/985,638.12 = 391,926.89/x
  3. Step 3: Cross multiply
    714,219.61x = 985,638.12 × 391,926.89
  4. Step 4: Simplify right side
    714,219.61x = 386,298,076,149.22
  5. Step 5: Solve for x
    x = 386,298,076,149.22/714,219.61
  6. Step 6: Final answer
    x = 540,867.37

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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.