Home / 763,770.20-1,144,100.10-390,003.80

Finding the Fourth Proportional to 763,770.20, 1,144,100.10 and 390,003.80

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Solution

The fourth proportional to 763,770.20, 1,144,100.10 and 390,003.80 is: 584,211.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,770.20 : 1,144,100.10 = 390,003.80 : x
  2. Step 2: Convert to fraction form
    763,770.20/1,144,100.10 = 390,003.80/x
  3. Step 3: Cross multiply
    763,770.20x = 1,144,100.10 × 390,003.80
  4. Step 4: Simplify right side
    763,770.20x = 446,203,386,580.38
  5. Step 5: Solve for x
    x = 446,203,386,580.38/763,770.20
  6. Step 6: Final answer
    x = 584,211.57

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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.