Home / 1,242,163,409.40-1,861,662,600.90-660,176,465.40

Finding the Fourth Proportional to 1,242,163,409.40, 1,861,662,600.90 and 660,176,465.40

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Solution

The fourth proportional to 1,242,163,409.40, 1,861,662,600.90 and 660,176,465.40 is: 989,423,634.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,163,409.40 : 1,861,662,600.90 = 660,176,465.40 : x
  2. Step 2: Convert to fraction form
    1,242,163,409.40/1,861,662,600.90 = 660,176,465.40/x
  3. Step 3: Cross multiply
    1,242,163,409.40x = 1,861,662,600.90 × 660,176,465.40
  4. Step 4: Simplify right side
    1,242,163,409.40x = 1,229,025,835,629,532,928
  5. Step 5: Solve for x
    x = 1,229,025,835,629,532,928/1,242,163,409.40
  6. Step 6: Final answer
    x = 989,423,634.87

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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.