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Finding the Fourth Proportional to 612,159.20, 918,333.76 and 312,477.44

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Solution

The fourth proportional to 612,159.20, 918,333.76 and 312,477.44 is: 468,764.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,159.20 : 918,333.76 = 312,477.44 : x
  2. Step 2: Convert to fraction form
    612,159.20/918,333.76 = 312,477.44/x
  3. Step 3: Cross multiply
    612,159.20x = 918,333.76 × 312,477.44
  4. Step 4: Simplify right side
    612,159.20x = 286,958,582,390.37
  5. Step 5: Solve for x
    x = 286,958,582,390.37/612,159.20
  6. Step 6: Final answer
    x = 468,764.63

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1.5x scale

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.