Home / 648,909.20-973,363.80-383,188.70

Finding the Fourth Proportional to 648,909.20, 973,363.80 and 383,188.70

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Solution

The fourth proportional to 648,909.20, 973,363.80 and 383,188.70 is: 574,783.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,909.20 : 973,363.80 = 383,188.70 : x
  2. Step 2: Convert to fraction form
    648,909.20/973,363.80 = 383,188.70/x
  3. Step 3: Cross multiply
    648,909.20x = 973,363.80 × 383,188.70
  4. Step 4: Simplify right side
    648,909.20x = 372,982,009,149.06
  5. Step 5: Solve for x
    x = 372,982,009,149.06/648,909.20
  6. Step 6: Final answer
    x = 574,783.05

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.