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Finding the Fourth Proportional to 551,124,019.60, 826,686,029.40 and 308,755,430.80

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Solution

The fourth proportional to 551,124,019.60, 826,686,029.40 and 308,755,430.80 is: 463,133,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,124,019.60 : 826,686,029.40 = 308,755,430.80 : x
  2. Step 2: Convert to fraction form
    551,124,019.60/826,686,029.40 = 308,755,430.80/x
  3. Step 3: Cross multiply
    551,124,019.60x = 826,686,029.40 × 308,755,430.80
  4. Step 4: Simplify right side
    551,124,019.60x = 255,243,801,143,738,464
  5. Step 5: Solve for x
    x = 255,243,801,143,738,464/551,124,019.60
  6. Step 6: Final answer
    x = 463,133,146.20

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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.