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Finding the Fourth Proportional to 384,692.40, 577,038.60 and 346,638.60

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Solution

The fourth proportional to 384,692.40, 577,038.60 and 346,638.60 is: 519,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,692.40 : 577,038.60 = 346,638.60 : x
  2. Step 2: Convert to fraction form
    384,692.40/577,038.60 = 346,638.60/x
  3. Step 3: Cross multiply
    384,692.40x = 577,038.60 × 346,638.60
  4. Step 4: Simplify right side
    384,692.40x = 200,023,852,449.96
  5. Step 5: Solve for x
    x = 200,023,852,449.96/384,692.40
  6. Step 6: Final answer
    x = 519,957.90

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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.