Home / 926,314.20-1,388,815.20-421,117.20

Finding the Fourth Proportional to 926,314.20, 1,388,815.20 and 421,117.20

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Solution

The fourth proportional to 926,314.20, 1,388,815.20 and 421,117.20 is: 631,377.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,314.20 : 1,388,815.20 = 421,117.20 : x
  2. Step 2: Convert to fraction form
    926,314.20/1,388,815.20 = 421,117.20/x
  3. Step 3: Cross multiply
    926,314.20x = 1,388,815.20 × 421,117.20
  4. Step 4: Simplify right side
    926,314.20x = 584,853,968,341.44
  5. Step 5: Solve for x
    x = 584,853,968,341.44/926,314.20
  6. Step 6: Final answer
    x = 631,377.53

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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.