Home / 909,939.60-1,364,909.40-890,256.60

Finding the Fourth Proportional to 909,939.60, 1,364,909.40 and 890,256.60

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Solution

The fourth proportional to 909,939.60, 1,364,909.40 and 890,256.60 is: 1,335,384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,939.60 : 1,364,909.40 = 890,256.60 : x
  2. Step 2: Convert to fraction form
    909,939.60/1,364,909.40 = 890,256.60/x
  3. Step 3: Cross multiply
    909,939.60x = 1,364,909.40 × 890,256.60
  4. Step 4: Simplify right side
    909,939.60x = 1,215,119,601,752.04
  5. Step 5: Solve for x
    x = 1,215,119,601,752.04/909,939.60
  6. Step 6: Final answer
    x = 1,335,384.90

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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.