Home / 699,258.12-964,966.50-393,311.40

Finding the Fourth Proportional to 699,258.12, 964,966.50 and 393,311.40

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Solution

The fourth proportional to 699,258.12, 964,966.50 and 393,311.40 is: 542,764.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,258.12 : 964,966.50 = 393,311.40 : x
  2. Step 2: Convert to fraction form
    699,258.12/964,966.50 = 393,311.40/x
  3. Step 3: Cross multiply
    699,258.12x = 964,966.50 × 393,311.40
  4. Step 4: Simplify right side
    699,258.12x = 379,532,325,068.10
  5. Step 5: Solve for x
    x = 379,532,325,068.10/699,258.12
  6. Step 6: Final answer
    x = 542,764.27

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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.