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Finding the Fourth Proportional to 576,878.40, 865,317.60 and 377,812.80

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Solution

The fourth proportional to 576,878.40, 865,317.60 and 377,812.80 is: 566,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,878.40 : 865,317.60 = 377,812.80 : x
  2. Step 2: Convert to fraction form
    576,878.40/865,317.60 = 377,812.80/x
  3. Step 3: Cross multiply
    576,878.40x = 865,317.60 × 377,812.80
  4. Step 4: Simplify right side
    576,878.40x = 326,928,065,345.28
  5. Step 5: Solve for x
    x = 326,928,065,345.28/576,878.40
  6. Step 6: Final answer
    x = 566,719.20

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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.