Home / 538,904.76-743,688.24-309,477.06

Finding the Fourth Proportional to 538,904.76, 743,688.24 and 309,477.06

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Solution

The fourth proportional to 538,904.76, 743,688.24 and 309,477.06 is: 427,078.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,904.76 : 743,688.24 = 309,477.06 : x
  2. Step 2: Convert to fraction form
    538,904.76/743,688.24 = 309,477.06/x
  3. Step 3: Cross multiply
    538,904.76x = 743,688.24 × 309,477.06
  4. Step 4: Simplify right side
    538,904.76x = 230,154,450,071.77
  5. Step 5: Solve for x
    x = 230,154,450,071.77/538,904.76
  6. Step 6: Final answer
    x = 427,078.15

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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.