Home / 1,189,080.76-1,783,806.64-390,180.46

Finding the Fourth Proportional to 1,189,080.76, 1,783,806.64 and 390,180.46

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Solution

The fourth proportional to 1,189,080.76, 1,783,806.64 and 390,180.46 is: 585,331.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,080.76 : 1,783,806.64 = 390,180.46 : x
  2. Step 2: Convert to fraction form
    1,189,080.76/1,783,806.64 = 390,180.46/x
  3. Step 3: Cross multiply
    1,189,080.76x = 1,783,806.64 × 390,180.46
  4. Step 4: Simplify right side
    1,189,080.76x = 696,006,495,346.25
  5. Step 5: Solve for x
    x = 696,006,495,346.25/1,189,080.76
  6. Step 6: Final answer
    x = 585,331.56

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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.