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Finding the Fourth Proportional to 621,692.96, 857,967.80 and 367,038.68

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Solution

The fourth proportional to 621,692.96, 857,967.80 and 367,038.68 is: 506,531.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,692.96 : 857,967.80 = 367,038.68 : x
  2. Step 2: Convert to fraction form
    621,692.96/857,967.80 = 367,038.68/x
  3. Step 3: Cross multiply
    621,692.96x = 857,967.80 × 367,038.68
  4. Step 4: Simplify right side
    621,692.96x = 314,907,368,794.50
  5. Step 5: Solve for x
    x = 314,907,368,794.50/621,692.96
  6. Step 6: Final answer
    x = 506,531.98

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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.