Home / 1,139,680.80-1,709,521.20-666,122.40

Finding the Fourth Proportional to 1,139,680.80, 1,709,521.20 and 666,122.40

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Solution

The fourth proportional to 1,139,680.80, 1,709,521.20 and 666,122.40 is: 999,183.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,680.80 : 1,709,521.20 = 666,122.40 : x
  2. Step 2: Convert to fraction form
    1,139,680.80/1,709,521.20 = 666,122.40/x
  3. Step 3: Cross multiply
    1,139,680.80x = 1,709,521.20 × 666,122.40
  4. Step 4: Simplify right side
    1,139,680.80x = 1,138,750,364,594.88
  5. Step 5: Solve for x
    x = 1,138,750,364,594.88/1,139,680.80
  6. Step 6: Final answer
    x = 999,183.60

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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.