Home / 918,556.10-1,377,834.15-419,920.10

Finding the Fourth Proportional to 918,556.10, 1,377,834.15 and 419,920.10

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Solution

The fourth proportional to 918,556.10, 1,377,834.15 and 419,920.10 is: 629,880.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,556.10 : 1,377,834.15 = 419,920.10 : x
  2. Step 2: Convert to fraction form
    918,556.10/1,377,834.15 = 419,920.10/x
  3. Step 3: Cross multiply
    918,556.10x = 1,377,834.15 × 419,920.10
  4. Step 4: Simplify right side
    918,556.10x = 578,580,254,051.42
  5. Step 5: Solve for x
    x = 578,580,254,051.42/918,556.10
  6. Step 6: Final answer
    x = 629,880.15

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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.