Home / 1,289,721.40-1,934,582.10-651,992.20

Finding the Fourth Proportional to 1,289,721.40, 1,934,582.10 and 651,992.20

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Solution

The fourth proportional to 1,289,721.40, 1,934,582.10 and 651,992.20 is: 977,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,721.40 : 1,934,582.10 = 651,992.20 : x
  2. Step 2: Convert to fraction form
    1,289,721.40/1,934,582.10 = 651,992.20/x
  3. Step 3: Cross multiply
    1,289,721.40x = 1,934,582.10 × 651,992.20
  4. Step 4: Simplify right side
    1,289,721.40x = 1,261,332,439,459.62
  5. Step 5: Solve for x
    x = 1,261,332,439,459.62/1,289,721.40
  6. Step 6: Final answer
    x = 977,988.30

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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.