Home / 828,602.80-1,143,629.08-518,649.21

Finding the Fourth Proportional to 828,602.80, 1,143,629.08 and 518,649.21

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Solution

The fourth proportional to 828,602.80, 1,143,629.08 and 518,649.21 is: 715,834.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,602.80 : 1,143,629.08 = 518,649.21 : x
  2. Step 2: Convert to fraction form
    828,602.80/1,143,629.08 = 518,649.21/x
  3. Step 3: Cross multiply
    828,602.80x = 1,143,629.08 × 518,649.21
  4. Step 4: Simplify right side
    828,602.80x = 593,142,317,578.40
  5. Step 5: Solve for x
    x = 593,142,317,578.40/828,602.80
  6. Step 6: Final answer
    x = 715,834.32

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.