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Finding the Fourth Proportional to 612,692.60, 845,390.64 and 357,994.56

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Solution

The fourth proportional to 612,692.60, 845,390.64 and 357,994.56 is: 493,959.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,692.60 : 845,390.64 = 357,994.56 : x
  2. Step 2: Convert to fraction form
    612,692.60/845,390.64 = 357,994.56/x
  3. Step 3: Cross multiply
    612,692.60x = 845,390.64 × 357,994.56
  4. Step 4: Simplify right side
    612,692.60x = 302,645,250,194.92
  5. Step 5: Solve for x
    x = 302,645,250,194.92/612,692.60
  6. Step 6: Final answer
    x = 493,959.37

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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.