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Finding the Fourth Proportional to 559,854.59, 772,599.56 and 318,137.40

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Solution

The fourth proportional to 559,854.59, 772,599.56 and 318,137.40 is: 439,029.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,854.59 : 772,599.56 = 318,137.40 : x
  2. Step 2: Convert to fraction form
    559,854.59/772,599.56 = 318,137.40/x
  3. Step 3: Cross multiply
    559,854.59x = 772,599.56 × 318,137.40
  4. Step 4: Simplify right side
    559,854.59x = 245,792,813,668.86
  5. Step 5: Solve for x
    x = 245,792,813,668.86/559,854.59
  6. Step 6: Final answer
    x = 439,029.74

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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.