Home / 810,015.40-1,213,856.70-360,368.20

Finding the Fourth Proportional to 810,015.40, 1,213,856.70 and 360,368.20

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Solution

The fourth proportional to 810,015.40, 1,213,856.70 and 360,368.20 is: 540,033.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,015.40 : 1,213,856.70 = 360,368.20 : x
  2. Step 2: Convert to fraction form
    810,015.40/1,213,856.70 = 360,368.20/x
  3. Step 3: Cross multiply
    810,015.40x = 1,213,856.70 × 360,368.20
  4. Step 4: Simplify right side
    810,015.40x = 437,435,354,036.94
  5. Step 5: Solve for x
    x = 437,435,354,036.94/810,015.40
  6. Step 6: Final answer
    x = 540,033.38

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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.