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Finding the Fourth Proportional to 835,626.71, 1,153,169.71 and 491,477.15

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Solution

The fourth proportional to 835,626.71, 1,153,169.71 and 491,477.15 is: 678,241.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,626.71 : 1,153,169.71 = 491,477.15 : x
  2. Step 2: Convert to fraction form
    835,626.71/1,153,169.71 = 491,477.15/x
  3. Step 3: Cross multiply
    835,626.71x = 1,153,169.71 × 491,477.15
  4. Step 4: Simplify right side
    835,626.71x = 566,756,564,191.36
  5. Step 5: Solve for x
    x = 566,756,564,191.36/835,626.71
  6. Step 6: Final answer
    x = 678,241.32

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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.