Home / 1,319,954.40-1,979,542.80-520,970.40

Finding the Fourth Proportional to 1,319,954.40, 1,979,542.80 and 520,970.40

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Solution

The fourth proportional to 1,319,954.40, 1,979,542.80 and 520,970.40 is: 781,302.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,954.40 : 1,979,542.80 = 520,970.40 : x
  2. Step 2: Convert to fraction form
    1,319,954.40/1,979,542.80 = 520,970.40/x
  3. Step 3: Cross multiply
    1,319,954.40x = 1,979,542.80 × 520,970.40
  4. Step 4: Simplify right side
    1,319,954.40x = 1,031,283,204,333.12
  5. Step 5: Solve for x
    x = 1,031,283,204,333.12/1,319,954.40
  6. Step 6: Final answer
    x = 781,302.15

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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.