Home / 727,219.20-1,090,828.80-328,310.40

Finding the Fourth Proportional to 727,219.20, 1,090,828.80 and 328,310.40

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Solution

The fourth proportional to 727,219.20, 1,090,828.80 and 328,310.40 is: 492,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,219.20 : 1,090,828.80 = 328,310.40 : x
  2. Step 2: Convert to fraction form
    727,219.20/1,090,828.80 = 328,310.40/x
  3. Step 3: Cross multiply
    727,219.20x = 1,090,828.80 × 328,310.40
  4. Step 4: Simplify right side
    727,219.20x = 358,130,439,659.52
  5. Step 5: Solve for x
    x = 358,130,439,659.52/727,219.20
  6. Step 6: Final answer
    x = 492,465.60

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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.