Home / 612,529.04-918,979.84-313,219.76

Finding the Fourth Proportional to 612,529.04, 918,979.84 and 313,219.76

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Solution

The fourth proportional to 612,529.04, 918,979.84 and 313,219.76 is: 469,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,529.04 : 918,979.84 = 313,219.76 : x
  2. Step 2: Convert to fraction form
    612,529.04/918,979.84 = 313,219.76/x
  3. Step 3: Cross multiply
    612,529.04x = 918,979.84 × 313,219.76
  4. Step 4: Simplify right side
    612,529.04x = 287,842,644,929.64
  5. Step 5: Solve for x
    x = 287,842,644,929.64/612,529.04
  6. Step 6: Final answer
    x = 469,924.90

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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.