Home / 612,905.13-919,443.96-213,488.19

Finding the Fourth Proportional to 612,905.13, 919,443.96 and 213,488.19

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Solution

The fourth proportional to 612,905.13, 919,443.96 and 213,488.19 is: 320,262.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,905.13 : 919,443.96 = 213,488.19 : x
  2. Step 2: Convert to fraction form
    612,905.13/919,443.96 = 213,488.19/x
  3. Step 3: Cross multiply
    612,905.13x = 919,443.96 × 213,488.19
  4. Step 4: Simplify right side
    612,905.13x = 196,290,426,826.83
  5. Step 5: Solve for x
    x = 196,290,426,826.83/612,905.13
  6. Step 6: Final answer
    x = 320,262.33

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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.