Home / 912,906.11-1,369,483.78-380,302.59

Finding the Fourth Proportional to 912,906.11, 1,369,483.78 and 380,302.59

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Solution

The fourth proportional to 912,906.11, 1,369,483.78 and 380,302.59 is: 570,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,906.11 : 1,369,483.78 = 380,302.59 : x
  2. Step 2: Convert to fraction form
    912,906.11/1,369,483.78 = 380,302.59/x
  3. Step 3: Cross multiply
    912,906.11x = 1,369,483.78 × 380,302.59
  4. Step 4: Simplify right side
    912,906.11x = 520,818,222,909.45
  5. Step 5: Solve for x
    x = 520,818,222,909.45/912,906.11
  6. Step 6: Final answer
    x = 570,505.79

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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.