Home / 1,140,208.20-1,709,909.10-392,080.20

Finding the Fourth Proportional to 1,140,208.20, 1,709,909.10 and 392,080.20

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Solution

The fourth proportional to 1,140,208.20, 1,709,909.10 and 392,080.20 is: 587,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140,208.20 : 1,709,909.10 = 392,080.20 : x
  2. Step 2: Convert to fraction form
    1,140,208.20/1,709,909.10 = 392,080.20/x
  3. Step 3: Cross multiply
    1,140,208.20x = 1,709,909.10 × 392,080.20
  4. Step 4: Simplify right side
    1,140,208.20x = 670,421,501,909.82
  5. Step 5: Solve for x
    x = 670,421,501,909.82/1,140,208.20
  6. Step 6: Final answer
    x = 587,981.65

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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.