Home / 818,400,113.78-1,129,392,610.19-442,056,699.82

Finding the Fourth Proportional to 818,400,113.78, 1,129,392,610.19 and 442,056,699.82

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Solution

The fourth proportional to 818,400,113.78, 1,129,392,610.19 and 442,056,699.82 is: 610,038,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,400,113.78 : 1,129,392,610.19 = 442,056,699.82 : x
  2. Step 2: Convert to fraction form
    818,400,113.78/1,129,392,610.19 = 442,056,699.82/x
  3. Step 3: Cross multiply
    818,400,113.78x = 1,129,392,610.19 × 442,056,699.82
  4. Step 4: Simplify right side
    818,400,113.78x = 499,255,570,061,330,688
  5. Step 5: Solve for x
    x = 499,255,570,061,330,688/818,400,113.78
  6. Step 6: Final answer
    x = 610,038,490.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.