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Finding the Fourth Proportional to 873,680.77, 1,309,985.95 and 340,579

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Solution

The fourth proportional to 873,680.77, 1,309,985.95 and 340,579 is: 510,659.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,680.77 : 1,309,985.95 = 340,579 : x
  2. Step 2: Convert to fraction form
    873,680.77/1,309,985.95 = 340,579/x
  3. Step 3: Cross multiply
    873,680.77x = 1,309,985.95 × 340,579
  4. Step 4: Simplify right side
    873,680.77x = 446,153,704,865.05
  5. Step 5: Solve for x
    x = 446,153,704,865.05/873,680.77
  6. Step 6: Final answer
    x = 510,659.87

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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.