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Finding the Fourth Proportional to 655,545,894.86, 904,626,415.30 and 358,198,344.64

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Solution

The fourth proportional to 655,545,894.86, 904,626,415.30 and 358,198,344.64 is: 494,299,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,545,894.86 : 904,626,415.30 = 358,198,344.64 : x
  2. Step 2: Convert to fraction form
    655,545,894.86/904,626,415.30 = 358,198,344.64/x
  3. Step 3: Cross multiply
    655,545,894.86x = 904,626,415.30 × 358,198,344.64
  4. Step 4: Simplify right side
    655,545,894.86x = 324,035,684,478,077,120
  5. Step 5: Solve for x
    x = 324,035,684,478,077,120/655,545,894.86
  6. Step 6: Final answer
    x = 494,299,006.40

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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.