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Finding the Fourth Proportional to 508,920.40, 763,380.60 and 446,712.40

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Solution

The fourth proportional to 508,920.40, 763,380.60 and 446,712.40 is: 670,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,920.40 : 763,380.60 = 446,712.40 : x
  2. Step 2: Convert to fraction form
    508,920.40/763,380.60 = 446,712.40/x
  3. Step 3: Cross multiply
    508,920.40x = 763,380.60 × 446,712.40
  4. Step 4: Simplify right side
    508,920.40x = 341,011,579,939.44
  5. Step 5: Solve for x
    x = 341,011,579,939.44/508,920.40
  6. Step 6: Final answer
    x = 670,068.60

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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.