Home / 813,201.89-1,122,225.21-450,631.81

Finding the Fourth Proportional to 813,201.89, 1,122,225.21 and 450,631.81

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Solution

The fourth proportional to 813,201.89, 1,122,225.21 and 450,631.81 is: 621,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,201.89 : 1,122,225.21 = 450,631.81 : x
  2. Step 2: Convert to fraction form
    813,201.89/1,122,225.21 = 450,631.81/x
  3. Step 3: Cross multiply
    813,201.89x = 1,122,225.21 × 450,631.81
  4. Step 4: Simplify right side
    813,201.89x = 505,710,375,356.77
  5. Step 5: Solve for x
    x = 505,710,375,356.77/813,201.89
  6. Step 6: Final answer
    x = 621,875.55

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1.5x scale

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.