Home / 644,678.20-967,211.70-345,302.20

Finding the Fourth Proportional to 644,678.20, 967,211.70 and 345,302.20

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Solution

The fourth proportional to 644,678.20, 967,211.70 and 345,302.20 is: 518,057.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,678.20 : 967,211.70 = 345,302.20 : x
  2. Step 2: Convert to fraction form
    644,678.20/967,211.70 = 345,302.20/x
  3. Step 3: Cross multiply
    644,678.20x = 967,211.70 × 345,302.20
  4. Step 4: Simplify right side
    644,678.20x = 333,980,327,875.74
  5. Step 5: Solve for x
    x = 333,980,327,875.74/644,678.20
  6. Step 6: Final answer
    x = 518,057.42

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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.