Home / 419,904,734.10-629,857,101.15-386,742,815.70

Finding the Fourth Proportional to 419,904,734.10, 629,857,101.15 and 386,742,815.70

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Solution

The fourth proportional to 419,904,734.10, 629,857,101.15 and 386,742,815.70 is: 580,114,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,734.10 : 629,857,101.15 = 386,742,815.70 : x
  2. Step 2: Convert to fraction form
    419,904,734.10/629,857,101.15 = 386,742,815.70/x
  3. Step 3: Cross multiply
    419,904,734.10x = 629,857,101.15 × 386,742,815.70
  4. Step 4: Simplify right side
    419,904,734.10x = 243,592,708,787,390,688
  5. Step 5: Solve for x
    x = 243,592,708,787,390,688/419,904,734.10
  6. Step 6: Final answer
    x = 580,114,223.55

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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.