Home / 1,319,239.80-1,977,995.70-520,039.80

Finding the Fourth Proportional to 1,319,239.80, 1,977,995.70 and 520,039.80

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Solution

The fourth proportional to 1,319,239.80, 1,977,995.70 and 520,039.80 is: 779,719.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,239.80 : 1,977,995.70 = 520,039.80 : x
  2. Step 2: Convert to fraction form
    1,319,239.80/1,977,995.70 = 520,039.80/x
  3. Step 3: Cross multiply
    1,319,239.80x = 1,977,995.70 × 520,039.80
  4. Step 4: Simplify right side
    1,319,239.80x = 1,028,636,488,228.86
  5. Step 5: Solve for x
    x = 1,028,636,488,228.86/1,319,239.80
  6. Step 6: Final answer
    x = 779,719.11

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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.