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Finding the Fourth Proportional to 663,521,881.57, 915,682,188.78 and 362,123,696.01

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Solution

The fourth proportional to 663,521,881.57, 915,682,188.78 and 362,123,696.01 is: 499,742,702.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,521,881.57 : 915,682,188.78 = 362,123,696.01 : x
  2. Step 2: Convert to fraction form
    663,521,881.57/915,682,188.78 = 362,123,696.01/x
  3. Step 3: Cross multiply
    663,521,881.57x = 915,682,188.78 × 362,123,696.01
  4. Step 4: Simplify right side
    663,521,881.57x = 331,590,218,574,973,952
  5. Step 5: Solve for x
    x = 331,590,218,574,973,952/663,521,881.57
  6. Step 6: Final answer
    x = 499,742,702.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.