Home / 926,520.20-1,389,124.20-421,323.20

Finding the Fourth Proportional to 926,520.20, 1,389,124.20 and 421,323.20

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Solution

The fourth proportional to 926,520.20, 1,389,124.20 and 421,323.20 is: 631,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,520.20 : 1,389,124.20 = 421,323.20 : x
  2. Step 2: Convert to fraction form
    926,520.20/1,389,124.20 = 421,323.20/x
  3. Step 3: Cross multiply
    926,520.20x = 1,389,124.20 × 421,323.20
  4. Step 4: Simplify right side
    926,520.20x = 585,270,253,141.44
  5. Step 5: Solve for x
    x = 585,270,253,141.44/926,520.20
  6. Step 6: Final answer
    x = 631,686.45

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1.5x scale

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.