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Finding the Fourth Proportional to 641,348,879.60, 962,023,319.40 and 549,515,874.80

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Solution

The fourth proportional to 641,348,879.60, 962,023,319.40 and 549,515,874.80 is: 824,273,812.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,348,879.60 : 962,023,319.40 = 549,515,874.80 : x
  2. Step 2: Convert to fraction form
    641,348,879.60/962,023,319.40 = 549,515,874.80/x
  3. Step 3: Cross multiply
    641,348,879.60x = 962,023,319.40 × 549,515,874.80
  4. Step 4: Simplify right side
    641,348,879.60x = 528,647,085,938,090,752
  5. Step 5: Solve for x
    x = 528,647,085,938,090,752/641,348,879.60
  6. Step 6: Final answer
    x = 824,273,812.20

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1.5x scale

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.