Home / 2,159,122.40-3,237,128.40-1,212,783.20

Finding the Fourth Proportional to 2,159,122.40, 3,237,128.40 and 1,212,783.20

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Solution

The fourth proportional to 2,159,122.40, 3,237,128.40 and 1,212,783.20 is: 1,818,301.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159,122.40 : 3,237,128.40 = 1,212,783.20 : x
  2. Step 2: Convert to fraction form
    2,159,122.40/3,237,128.40 = 1,212,783.20/x
  3. Step 3: Cross multiply
    2,159,122.40x = 3,237,128.40 × 1,212,783.20
  4. Step 4: Simplify right side
    2,159,122.40x = 3,925,934,939,762.88
  5. Step 5: Solve for x
    x = 3,925,934,939,762.88/2,159,122.40
  6. Step 6: Final answer
    x = 1,818,301.24

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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.