Home / 1,261,390.58-1,740,693.12-688,430.60

Finding the Fourth Proportional to 1,261,390.58, 1,740,693.12 and 688,430.60

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Solution

The fourth proportional to 1,261,390.58, 1,740,693.12 and 688,430.60 is: 950,020.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,390.58 : 1,740,693.12 = 688,430.60 : x
  2. Step 2: Convert to fraction form
    1,261,390.58/1,740,693.12 = 688,430.60/x
  3. Step 3: Cross multiply
    1,261,390.58x = 1,740,693.12 × 688,430.60
  4. Step 4: Simplify right side
    1,261,390.58x = 1,198,346,410,787.59
  5. Step 5: Solve for x
    x = 1,198,346,410,787.59/1,261,390.58
  6. Step 6: Final answer
    x = 950,020.10

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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.