Home / 428,117,218.20-642,177,024.44-133,055,483.63

Finding the Fourth Proportional to 428,117,218.20, 642,177,024.44 and 133,055,483.63

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Solution

The fourth proportional to 428,117,218.20, 642,177,024.44 and 133,055,483.63 is: 199,583,597.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,117,218.20 : 642,177,024.44 = 133,055,483.63 : x
  2. Step 2: Convert to fraction form
    428,117,218.20/642,177,024.44 = 133,055,483.63/x
  3. Step 3: Cross multiply
    428,117,218.20x = 642,177,024.44 × 133,055,483.63
  4. Step 4: Simplify right side
    428,117,218.20x = 85,445,174,563,878,688
  5. Step 5: Solve for x
    x = 85,445,174,563,878,688/428,117,218.20
  6. Step 6: Final answer
    x = 199,583,597.51

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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.