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Finding the Fourth Proportional to 612,436.65, 918,841.62 and 313,127.37

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Solution

The fourth proportional to 612,436.65, 918,841.62 and 313,127.37 is: 469,786.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,436.65 : 918,841.62 = 313,127.37 : x
  2. Step 2: Convert to fraction form
    612,436.65/918,841.62 = 313,127.37/x
  3. Step 3: Cross multiply
    612,436.65x = 918,841.62 × 313,127.37
  4. Step 4: Simplify right side
    612,436.65x = 287,714,461,091.37
  5. Step 5: Solve for x
    x = 287,714,461,091.37/612,436.65
  6. Step 6: Final answer
    x = 469,786.49

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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.