Home / 877,619.20-1,316,428.80-809,190.40

Finding the Fourth Proportional to 877,619.20, 1,316,428.80 and 809,190.40

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Solution

The fourth proportional to 877,619.20, 1,316,428.80 and 809,190.40 is: 1,213,785.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,619.20 : 1,316,428.80 = 809,190.40 : x
  2. Step 2: Convert to fraction form
    877,619.20/1,316,428.80 = 809,190.40/x
  3. Step 3: Cross multiply
    877,619.20x = 1,316,428.80 × 809,190.40
  4. Step 4: Simplify right side
    877,619.20x = 1,065,241,547,243.52
  5. Step 5: Solve for x
    x = 1,065,241,547,243.52/877,619.20
  6. Step 6: Final answer
    x = 1,213,785.60

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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.