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Finding the Fourth Proportional to 706,270.21, 974,648.05 and 383,980.30

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Solution

The fourth proportional to 706,270.21, 974,648.05 and 383,980.30 is: 529,890.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,270.21 : 974,648.05 = 383,980.30 : x
  2. Step 2: Convert to fraction form
    706,270.21/974,648.05 = 383,980.30/x
  3. Step 3: Cross multiply
    706,270.21x = 974,648.05 × 383,980.30
  4. Step 4: Simplify right side
    706,270.21x = 374,245,650,633.42
  5. Step 5: Solve for x
    x = 374,245,650,633.42/706,270.21
  6. Step 6: Final answer
    x = 529,890.18

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Double scale
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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.