Home / 919,127.64-1,268,377.95-511,220.70

Finding the Fourth Proportional to 919,127.64, 1,268,377.95 and 511,220.70

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Solution

The fourth proportional to 919,127.64, 1,268,377.95 and 511,220.70 is: 705,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,127.64 : 1,268,377.95 = 511,220.70 : x
  2. Step 2: Convert to fraction form
    919,127.64/1,268,377.95 = 511,220.70/x
  3. Step 3: Cross multiply
    919,127.64x = 1,268,377.95 × 511,220.70
  4. Step 4: Simplify right side
    919,127.64x = 648,421,063,463.57
  5. Step 5: Solve for x
    x = 648,421,063,463.57/919,127.64
  6. Step 6: Final answer
    x = 705,474.45

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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.