Home / 909,367.40-1,364,001.96-278,281.28

Finding the Fourth Proportional to 909,367.40, 1,364,001.96 and 278,281.28

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Solution

The fourth proportional to 909,367.40, 1,364,001.96 and 278,281.28 is: 417,406.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,367.40 : 1,364,001.96 = 278,281.28 : x
  2. Step 2: Convert to fraction form
    909,367.40/1,364,001.96 = 278,281.28/x
  3. Step 3: Cross multiply
    909,367.40x = 1,364,001.96 × 278,281.28
  4. Step 4: Simplify right side
    909,367.40x = 379,576,211,351.31
  5. Step 5: Solve for x
    x = 379,576,211,351.31/909,367.40
  6. Step 6: Final answer
    x = 417,406.88

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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.