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Finding the Fourth Proportional to 492,437.16, 679,692.32 and 320,826.10

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Solution

The fourth proportional to 492,437.16, 679,692.32 and 320,826.10 is: 442,824.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,437.16 : 679,692.32 = 320,826.10 : x
  2. Step 2: Convert to fraction form
    492,437.16/679,692.32 = 320,826.10/x
  3. Step 3: Cross multiply
    492,437.16x = 679,692.32 × 320,826.10
  4. Step 4: Simplify right side
    492,437.16x = 218,063,036,225.55
  5. Step 5: Solve for x
    x = 218,063,036,225.55/492,437.16
  6. Step 6: Final answer
    x = 442,824.09

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1.5x scale

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.