Home / 645,875,575.20-968,955,080.40-209,196,410.40

Finding the Fourth Proportional to 645,875,575.20, 968,955,080.40 and 209,196,410.40

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Solution

The fourth proportional to 645,875,575.20, 968,955,080.40 and 209,196,410.40 is: 313,840,517.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,875,575.20 : 968,955,080.40 = 209,196,410.40 : x
  2. Step 2: Convert to fraction form
    645,875,575.20/968,955,080.40 = 209,196,410.40/x
  3. Step 3: Cross multiply
    645,875,575.20x = 968,955,080.40 × 209,196,410.40
  4. Step 4: Simplify right side
    645,875,575.20x = 202,701,924,658,523,392
  5. Step 5: Solve for x
    x = 202,701,924,658,523,392/645,875,575.20
  6. Step 6: Final answer
    x = 313,840,517.34

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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.