Home / 643,312.20-964,676.70-243,820.20

Finding the Fourth Proportional to 643,312.20, 964,676.70 and 243,820.20

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Solution

The fourth proportional to 643,312.20, 964,676.70 and 243,820.20 is: 365,619.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,312.20 : 964,676.70 = 243,820.20 : x
  2. Step 2: Convert to fraction form
    643,312.20/964,676.70 = 243,820.20/x
  3. Step 3: Cross multiply
    643,312.20x = 964,676.70 × 243,820.20
  4. Step 4: Simplify right side
    643,312.20x = 235,207,665,929.34
  5. Step 5: Solve for x
    x = 235,207,665,929.34/643,312.20
  6. Step 6: Final answer
    x = 365,619.78

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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.