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Finding the Fourth Proportional to 637,627,360.86, 879,898,570.92 and 355,354,781.40

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Solution

The fourth proportional to 637,627,360.86, 879,898,570.92 and 355,354,781.40 is: 490,374,446.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,627,360.86 : 879,898,570.92 = 355,354,781.40 : x
  2. Step 2: Convert to fraction form
    637,627,360.86/879,898,570.92 = 355,354,781.40/x
  3. Step 3: Cross multiply
    637,627,360.86x = 879,898,570.92 × 355,354,781.40
  4. Step 4: Simplify right side
    637,627,360.86x = 312,676,164,323,448,960
  5. Step 5: Solve for x
    x = 312,676,164,323,448,960/637,627,360.86
  6. Step 6: Final answer
    x = 490,374,446.76

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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.