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Finding the Fourth Proportional to 641,342,625.60, 962,013,938.40 and 549,509,620.80

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Solution

The fourth proportional to 641,342,625.60, 962,013,938.40 and 549,509,620.80 is: 824,264,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,342,625.60 : 962,013,938.40 = 549,509,620.80 : x
  2. Step 2: Convert to fraction form
    641,342,625.60/962,013,938.40 = 549,509,620.80/x
  3. Step 3: Cross multiply
    641,342,625.60x = 962,013,938.40 × 549,509,620.80
  4. Step 4: Simplify right side
    641,342,625.60x = 528,635,914,494,498,496
  5. Step 5: Solve for x
    x = 528,635,914,494,498,496/641,342,625.60
  6. Step 6: Final answer
    x = 824,264,431.20

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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.