Home / 421,526,032.20-632,289,048.30-378,585,599.40

Finding the Fourth Proportional to 421,526,032.20, 632,289,048.30 and 378,585,599.40

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Solution

The fourth proportional to 421,526,032.20, 632,289,048.30 and 378,585,599.40 is: 567,878,399.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,526,032.20 : 632,289,048.30 = 378,585,599.40 : x
  2. Step 2: Convert to fraction form
    421,526,032.20/632,289,048.30 = 378,585,599.40/x
  3. Step 3: Cross multiply
    421,526,032.20x = 632,289,048.30 × 378,585,599.40
  4. Step 4: Simplify right side
    421,526,032.20x = 239,375,528,344,711,008
  5. Step 5: Solve for x
    x = 239,375,528,344,711,008/421,526,032.20
  6. Step 6: Final answer
    x = 567,878,399.10

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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.