Home / 926,518.20-1,389,121.20-421,321.20

Finding the Fourth Proportional to 926,518.20, 1,389,121.20 and 421,321.20

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Solution

The fourth proportional to 926,518.20, 1,389,121.20 and 421,321.20 is: 631,683.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,518.20 : 1,389,121.20 = 421,321.20 : x
  2. Step 2: Convert to fraction form
    926,518.20/1,389,121.20 = 421,321.20/x
  3. Step 3: Cross multiply
    926,518.20x = 1,389,121.20 × 421,321.20
  4. Step 4: Simplify right side
    926,518.20x = 585,266,210,929.44
  5. Step 5: Solve for x
    x = 585,266,210,929.44/926,518.20
  6. Step 6: Final answer
    x = 631,683.45

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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.