Home / 2,139,089.90-3,208,603.83-519,870.74

Finding the Fourth Proportional to 2,139,089.90, 3,208,603.83 and 519,870.74

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Solution

The fourth proportional to 2,139,089.90, 3,208,603.83 and 519,870.74 is: 779,798.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139,089.90 : 3,208,603.83 = 519,870.74 : x
  2. Step 2: Convert to fraction form
    2,139,089.90/3,208,603.83 = 519,870.74/x
  3. Step 3: Cross multiply
    2,139,089.90x = 3,208,603.83 × 519,870.74
  4. Step 4: Simplify right side
    2,139,089.90x = 1,668,059,247,468.93
  5. Step 5: Solve for x
    x = 1,668,059,247,468.93/2,139,089.90
  6. Step 6: Final answer
    x = 779,798.57

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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.