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Finding the Fourth Proportional to 646,554,896, 969,840,742.08 and 215,733,392

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Solution

The fourth proportional to 646,554,896, 969,840,742.08 and 215,733,392 is: 323,602,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,554,896 : 969,840,742.08 = 215,733,392 : x
  2. Step 2: Convert to fraction form
    646,554,896/969,840,742.08 = 215,733,392/x
  3. Step 3: Cross multiply
    646,554,896x = 969,840,742.08 × 215,733,392
  4. Step 4: Simplify right side
    646,554,896x = 209,227,032,988,715,552
  5. Step 5: Solve for x
    x = 209,227,032,988,715,552/646,554,896
  6. Step 6: Final answer
    x = 323,602,890.15

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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.