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Finding the Fourth Proportional to 719,663,377.38, 992,964,640.50 and 437,400,890.52

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Solution

The fourth proportional to 719,663,377.38, 992,964,640.50 and 437,400,890.52 is: 603,509,406.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,663,377.38 : 992,964,640.50 = 437,400,890.52 : x
  2. Step 2: Convert to fraction form
    719,663,377.38/992,964,640.50 = 437,400,890.52/x
  3. Step 3: Cross multiply
    719,663,377.38x = 992,964,640.50 × 437,400,890.52
  4. Step 4: Simplify right side
    719,663,377.38x = 434,323,618,009,571,648
  5. Step 5: Solve for x
    x = 434,323,618,009,571,648/719,663,377.38
  6. Step 6: Final answer
    x = 603,509,406.84

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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.