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Finding the Fourth Proportional to 637,627,361.86, 879,898,572.30 and 355,354,782.40

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Solution

The fourth proportional to 637,627,361.86, 879,898,572.30 and 355,354,782.40 is: 490,374,448.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,627,361.86 : 879,898,572.30 = 355,354,782.40 : x
  2. Step 2: Convert to fraction form
    637,627,361.86/879,898,572.30 = 355,354,782.40/x
  3. Step 3: Cross multiply
    637,627,361.86x = 879,898,572.30 × 355,354,782.40
  4. Step 4: Simplify right side
    637,627,361.86x = 312,676,165,693,737,152
  5. Step 5: Solve for x
    x = 312,676,165,693,737,152/637,627,361.86
  6. Step 6: Final answer
    x = 490,374,448.14

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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.