Home / 1,959,678.21-2,938,761.45-761,442.78

Finding the Fourth Proportional to 1,959,678.21, 2,938,761.45 and 761,442.78

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Solution

The fourth proportional to 1,959,678.21, 2,938,761.45 and 761,442.78 is: 1,141,870.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959,678.21 : 2,938,761.45 = 761,442.78 : x
  2. Step 2: Convert to fraction form
    1,959,678.21/2,938,761.45 = 761,442.78/x
  3. Step 3: Cross multiply
    1,959,678.21x = 2,938,761.45 × 761,442.78
  4. Step 4: Simplify right side
    1,959,678.21x = 2,237,698,688,244.83
  5. Step 5: Solve for x
    x = 2,237,698,688,244.83/1,959,678.21
  6. Step 6: Final answer
    x = 1,141,870.47

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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.