Home / 1,620,021.60-2,430,032.40-421,934.40

Finding the Fourth Proportional to 1,620,021.60, 2,430,032.40 and 421,934.40

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Solution

The fourth proportional to 1,620,021.60, 2,430,032.40 and 421,934.40 is: 632,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,021.60 : 2,430,032.40 = 421,934.40 : x
  2. Step 2: Convert to fraction form
    1,620,021.60/2,430,032.40 = 421,934.40/x
  3. Step 3: Cross multiply
    1,620,021.60x = 2,430,032.40 × 421,934.40
  4. Step 4: Simplify right side
    1,620,021.60x = 1,025,314,262,674.56
  5. Step 5: Solve for x
    x = 1,025,314,262,674.56/1,620,021.60
  6. Step 6: Final answer
    x = 632,901.60

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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.