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Finding the Fourth Proportional to 647,579.10, 971,368.65 and 529,383.90

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Solution

The fourth proportional to 647,579.10, 971,368.65 and 529,383.90 is: 794,075.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,579.10 : 971,368.65 = 529,383.90 : x
  2. Step 2: Convert to fraction form
    647,579.10/971,368.65 = 529,383.90/x
  3. Step 3: Cross multiply
    647,579.10x = 971,368.65 × 529,383.90
  4. Step 4: Simplify right side
    647,579.10x = 514,226,924,274.74
  5. Step 5: Solve for x
    x = 514,226,924,274.74/647,579.10
  6. Step 6: Final answer
    x = 794,075.85

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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.