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Finding the Fourth Proportional to 630,404,420.80, 944,810,368.80 and 306,591,044.80

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Solution

The fourth proportional to 630,404,420.80, 944,810,368.80 and 306,591,044.80 is: 459,499,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,404,420.80 : 944,810,368.80 = 306,591,044.80 : x
  2. Step 2: Convert to fraction form
    630,404,420.80/944,810,368.80 = 306,591,044.80/x
  3. Step 3: Cross multiply
    630,404,420.80x = 944,810,368.80 × 306,591,044.80
  4. Step 4: Simplify right side
    630,404,420.80x = 289,670,398,108,265,344
  5. Step 5: Solve for x
    x = 289,670,398,108,265,344/630,404,420.80
  6. Step 6: Final answer
    x = 459,499,312.74

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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.