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Finding the Fourth Proportional to 580,627,860.40, 870,374,920.20 and 519,405,857.20

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Solution

The fourth proportional to 580,627,860.40, 870,374,920.20 and 519,405,857.20 is: 778,601,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,627,860.40 : 870,374,920.20 = 519,405,857.20 : x
  2. Step 2: Convert to fraction form
    580,627,860.40/870,374,920.20 = 519,405,857.20/x
  3. Step 3: Cross multiply
    580,627,860.40x = 870,374,920.20 × 519,405,857.20
  4. Step 4: Simplify right side
    580,627,860.40x = 452,077,831,511,862,592
  5. Step 5: Solve for x
    x = 452,077,831,511,862,592/580,627,860.40
  6. Step 6: Final answer
    x = 778,601,686.80

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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.