Home / 1,279,724.46-1,919,688.75-438,283.50

Finding the Fourth Proportional to 1,279,724.46, 1,919,688.75 and 438,283.50

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Solution

The fourth proportional to 1,279,724.46, 1,919,688.75 and 438,283.50 is: 657,460.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,724.46 : 1,919,688.75 = 438,283.50 : x
  2. Step 2: Convert to fraction form
    1,279,724.46/1,919,688.75 = 438,283.50/x
  3. Step 3: Cross multiply
    1,279,724.46x = 1,919,688.75 × 438,283.50
  4. Step 4: Simplify right side
    1,279,724.46x = 841,367,904,260.63
  5. Step 5: Solve for x
    x = 841,367,904,260.63/1,279,724.46
  6. Step 6: Final answer
    x = 657,460.20

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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.