Home / 551,556.32-761,106.83-309,879.18

Finding the Fourth Proportional to 551,556.32, 761,106.83 and 309,879.18

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Solution

The fourth proportional to 551,556.32, 761,106.83 and 309,879.18 is: 427,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,556.32 : 761,106.83 = 309,879.18 : x
  2. Step 2: Convert to fraction form
    551,556.32/761,106.83 = 309,879.18/x
  3. Step 3: Cross multiply
    551,556.32x = 761,106.83 × 309,879.18
  4. Step 4: Simplify right side
    551,556.32x = 235,851,158,823.40
  5. Step 5: Solve for x
    x = 235,851,158,823.40/551,556.32
  6. Step 6: Final answer
    x = 427,610.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.