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Finding the Fourth Proportional to 578,854.95, 798,792.80 and 317,196.80

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Solution

The fourth proportional to 578,854.95, 798,792.80 and 317,196.80 is: 437,716.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,854.95 : 798,792.80 = 317,196.80 : x
  2. Step 2: Convert to fraction form
    578,854.95/798,792.80 = 317,196.80/x
  3. Step 3: Cross multiply
    578,854.95x = 798,792.80 × 317,196.80
  4. Step 4: Simplify right side
    578,854.95x = 253,374,520,023.04
  5. Step 5: Solve for x
    x = 253,374,520,023.04/578,854.95
  6. Step 6: Final answer
    x = 437,716.77

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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.