Home / 1,020,637.20-1,530,299.70-421,836.60

Finding the Fourth Proportional to 1,020,637.20, 1,530,299.70 and 421,836.60

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Solution

The fourth proportional to 1,020,637.20, 1,530,299.70 and 421,836.60 is: 632,483.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,637.20 : 1,530,299.70 = 421,836.60 : x
  2. Step 2: Convert to fraction form
    1,020,637.20/1,530,299.70 = 421,836.60/x
  3. Step 3: Cross multiply
    1,020,637.20x = 1,530,299.70 × 421,836.60
  4. Step 4: Simplify right side
    1,020,637.20x = 645,536,422,429.02
  5. Step 5: Solve for x
    x = 645,536,422,429.02/1,020,637.20
  6. Step 6: Final answer
    x = 632,483.73

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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.