Home / 1,020,772.20-1,530,502.20-421,971.60

Finding the Fourth Proportional to 1,020,772.20, 1,530,502.20 and 421,971.60

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Solution

The fourth proportional to 1,020,772.20, 1,530,502.20 and 421,971.60 is: 632,686.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,772.20 : 1,530,502.20 = 421,971.60 : x
  2. Step 2: Convert to fraction form
    1,020,772.20/1,530,502.20 = 421,971.60/x
  3. Step 3: Cross multiply
    1,020,772.20x = 1,530,502.20 × 421,971.60
  4. Step 4: Simplify right side
    1,020,772.20x = 645,828,462,137.52
  5. Step 5: Solve for x
    x = 645,828,462,137.52/1,020,772.20
  6. Step 6: Final answer
    x = 632,686.18

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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.