Home / 829,080.80-1,243,621.20-577,138.40

Finding the Fourth Proportional to 829,080.80, 1,243,621.20 and 577,138.40

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Solution

The fourth proportional to 829,080.80, 1,243,621.20 and 577,138.40 is: 865,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,080.80 : 1,243,621.20 = 577,138.40 : x
  2. Step 2: Convert to fraction form
    829,080.80/1,243,621.20 = 577,138.40/x
  3. Step 3: Cross multiply
    829,080.80x = 1,243,621.20 × 577,138.40
  4. Step 4: Simplify right side
    829,080.80x = 717,741,549,574.08
  5. Step 5: Solve for x
    x = 717,741,549,574.08/829,080.80
  6. Step 6: Final answer
    x = 865,707.60

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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.