Home / 918,938.52-1,268,135.88-511,031.46

Finding the Fourth Proportional to 918,938.52, 1,268,135.88 and 511,031.46

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Solution

The fourth proportional to 918,938.52, 1,268,135.88 and 511,031.46 is: 705,223.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,938.52 : 1,268,135.88 = 511,031.46 : x
  2. Step 2: Convert to fraction form
    918,938.52/1,268,135.88 = 511,031.46/x
  3. Step 3: Cross multiply
    918,938.52x = 1,268,135.88 × 511,031.46
  4. Step 4: Simplify right side
    918,938.52x = 648,057,330,234.79
  5. Step 5: Solve for x
    x = 648,057,330,234.79/918,938.52
  6. Step 6: Final answer
    x = 705,223.82

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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.