Home / 931,486.40-1,398,919.20-815,364.80

Finding the Fourth Proportional to 931,486.40, 1,398,919.20 and 815,364.80

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Solution

The fourth proportional to 931,486.40, 1,398,919.20 and 815,364.80 is: 1,224,526.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,486.40 : 1,398,919.20 = 815,364.80 : x
  2. Step 2: Convert to fraction form
    931,486.40/1,398,919.20 = 815,364.80/x
  3. Step 3: Cross multiply
    931,486.40x = 1,398,919.20 × 815,364.80
  4. Step 4: Simplify right side
    931,486.40x = 1,140,629,473,724.16
  5. Step 5: Solve for x
    x = 1,140,629,473,724.16/931,486.40
  6. Step 6: Final answer
    x = 1,224,526.17

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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.