Home / 705,990.11-974,266.45-383,700.21

Finding the Fourth Proportional to 705,990.11, 974,266.45 and 383,700.21

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Solution

The fourth proportional to 705,990.11, 974,266.45 and 383,700.21 is: 529,506.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,990.11 : 974,266.45 = 383,700.21 : x
  2. Step 2: Convert to fraction form
    705,990.11/974,266.45 = 383,700.21/x
  3. Step 3: Cross multiply
    705,990.11x = 974,266.45 × 383,700.21
  4. Step 4: Simplify right side
    705,990.11x = 373,826,236,848.21
  5. Step 5: Solve for x
    x = 373,826,236,848.21/705,990.11
  6. Step 6: Final answer
    x = 529,506.34

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Double scale
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Similar ratio
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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.