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Finding the Fourth Proportional to 576,656.79, 795,783.20 and 318,551.50

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Solution

The fourth proportional to 576,656.79, 795,783.20 and 318,551.50 is: 439,599.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,656.79 : 795,783.20 = 318,551.50 : x
  2. Step 2: Convert to fraction form
    576,656.79/795,783.20 = 318,551.50/x
  3. Step 3: Cross multiply
    576,656.79x = 795,783.20 × 318,551.50
  4. Step 4: Simplify right side
    576,656.79x = 253,497,931,436.77
  5. Step 5: Solve for x
    x = 253,497,931,436.77/576,656.79
  6. Step 6: Final answer
    x = 439,599.32

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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.