Home / 813,963.20-1,220,102.40-364,899.20

Finding the Fourth Proportional to 813,963.20, 1,220,102.40 and 364,899.20

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Solution

The fourth proportional to 813,963.20, 1,220,102.40 and 364,899.20 is: 546,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,963.20 : 1,220,102.40 = 364,899.20 : x
  2. Step 2: Convert to fraction form
    813,963.20/1,220,102.40 = 364,899.20/x
  3. Step 3: Cross multiply
    813,963.20x = 1,220,102.40 × 364,899.20
  4. Step 4: Simplify right side
    813,963.20x = 445,214,389,678.08
  5. Step 5: Solve for x
    x = 445,214,389,678.08/813,963.20
  6. Step 6: Final answer
    x = 546,971.15

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1.5x scale

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.