Home / 926,905.80-1,390,358.70-727,840.20

Finding the Fourth Proportional to 926,905.80, 1,390,358.70 and 727,840.20

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Solution

The fourth proportional to 926,905.80, 1,390,358.70 and 727,840.20 is: 1,091,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,905.80 : 1,390,358.70 = 727,840.20 : x
  2. Step 2: Convert to fraction form
    926,905.80/1,390,358.70 = 727,840.20/x
  3. Step 3: Cross multiply
    926,905.80x = 1,390,358.70 × 727,840.20
  4. Step 4: Simplify right side
    926,905.80x = 1,011,958,954,279.74
  5. Step 5: Solve for x
    x = 1,011,958,954,279.74/926,905.80
  6. Step 6: Final answer
    x = 1,091,760.30

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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.