Home / 645,875,695.20-968,955,260.40-209,196,530.40

Finding the Fourth Proportional to 645,875,695.20, 968,955,260.40 and 209,196,530.40

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Solution

The fourth proportional to 645,875,695.20, 968,955,260.40 and 209,196,530.40 is: 313,840,697.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,875,695.20 : 968,955,260.40 = 209,196,530.40 : x
  2. Step 2: Convert to fraction form
    645,875,695.20/968,955,260.40 = 209,196,530.40/x
  3. Step 3: Cross multiply
    645,875,695.20x = 968,955,260.40 × 209,196,530.40
  4. Step 4: Simplify right side
    645,875,695.20x = 202,702,078,588,508,512
  5. Step 5: Solve for x
    x = 202,702,078,588,508,512/645,875,695.20
  6. Step 6: Final answer
    x = 313,840,697.36

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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.