Home / 509,420.20-702,999.98-283,065.70

Finding the Fourth Proportional to 509,420.20, 702,999.98 and 283,065.70

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Solution

The fourth proportional to 509,420.20, 702,999.98 and 283,065.70 is: 390,630.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,420.20 : 702,999.98 = 283,065.70 : x
  2. Step 2: Convert to fraction form
    509,420.20/702,999.98 = 283,065.70/x
  3. Step 3: Cross multiply
    509,420.20x = 702,999.98 × 283,065.70
  4. Step 4: Simplify right side
    509,420.20x = 198,995,181,438.69
  5. Step 5: Solve for x
    x = 198,995,181,438.69/509,420.20
  6. Step 6: Final answer
    x = 390,630.72

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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.