Home / 691,723.04-954,592.40-389,916.96

Finding the Fourth Proportional to 691,723.04, 954,592.40 and 389,916.96

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Solution

The fourth proportional to 691,723.04, 954,592.40 and 389,916.96 is: 538,093.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,723.04 : 954,592.40 = 389,916.96 : x
  2. Step 2: Convert to fraction form
    691,723.04/954,592.40 = 389,916.96/x
  3. Step 3: Cross multiply
    691,723.04x = 954,592.40 × 389,916.96
  4. Step 4: Simplify right side
    691,723.04x = 372,211,766,647.10
  5. Step 5: Solve for x
    x = 372,211,766,647.10/691,723.04
  6. Step 6: Final answer
    x = 538,093.64

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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.