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Finding the Fourth Proportional to 641,347,820.60, 962,021,730.90 and 549,514,815.80

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Solution

The fourth proportional to 641,347,820.60, 962,021,730.90 and 549,514,815.80 is: 824,272,223.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,347,820.60 : 962,021,730.90 = 549,514,815.80 : x
  2. Step 2: Convert to fraction form
    641,347,820.60/962,021,730.90 = 549,514,815.80/x
  3. Step 3: Cross multiply
    641,347,820.60x = 962,021,730.90 × 549,514,815.80
  4. Step 4: Simplify right side
    641,347,820.60x = 528,645,194,251,110,592
  5. Step 5: Solve for x
    x = 528,645,194,251,110,592/641,347,820.60
  6. Step 6: Final answer
    x = 824,272,223.70

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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.