Home / 806,922.40-1,210,729.20-412,938.40

Finding the Fourth Proportional to 806,922.40, 1,210,729.20 and 412,938.40

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Solution

The fourth proportional to 806,922.40, 1,210,729.20 and 412,938.40 is: 619,584.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,922.40 : 1,210,729.20 = 412,938.40 : x
  2. Step 2: Convert to fraction form
    806,922.40/1,210,729.20 = 412,938.40/x
  3. Step 3: Cross multiply
    806,922.40x = 1,210,729.20 × 412,938.40
  4. Step 4: Simplify right side
    806,922.40x = 499,956,578,681.28
  5. Step 5: Solve for x
    x = 499,956,578,681.28/806,922.40
  6. Step 6: Final answer
    x = 619,584.46

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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.