Home / 645,875,576.20-968,955,081.90-209,196,411.40

Finding the Fourth Proportional to 645,875,576.20, 968,955,081.90 and 209,196,411.40

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Solution

The fourth proportional to 645,875,576.20, 968,955,081.90 and 209,196,411.40 is: 313,840,518.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,875,576.20 : 968,955,081.90 = 209,196,411.40 : x
  2. Step 2: Convert to fraction form
    645,875,576.20/968,955,081.90 = 209,196,411.40/x
  3. Step 3: Cross multiply
    645,875,576.20x = 968,955,081.90 × 209,196,411.40
  4. Step 4: Simplify right side
    645,875,576.20x = 202,701,925,941,273,088
  5. Step 5: Solve for x
    x = 202,701,925,941,273,088/645,875,576.20
  6. Step 6: Final answer
    x = 313,840,518.84

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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.