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Finding the Fourth Proportional to 9,787,643.80, 14,681,465.70 and 8,228,750.20

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Solution

The fourth proportional to 9,787,643.80, 14,681,465.70 and 8,228,750.20 is: 12,343,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,787,643.80 : 14,681,465.70 = 8,228,750.20 : x
  2. Step 2: Convert to fraction form
    9,787,643.80/14,681,465.70 = 8,228,750.20/x
  3. Step 3: Cross multiply
    9,787,643.80x = 14,681,465.70 × 8,228,750.20
  4. Step 4: Simplify right side
    9,787,643.80x = 120,810,113,815,168.14
  5. Step 5: Solve for x
    x = 120,810,113,815,168.14/9,787,643.80
  6. Step 6: Final answer
    x = 12,343,125.30

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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.