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Finding the Fourth Proportional to 554,205.21, 764,802.76 and 299,556.40

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Solution

The fourth proportional to 554,205.21, 764,802.76 and 299,556.40 is: 413,387.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,205.21 : 764,802.76 = 299,556.40 : x
  2. Step 2: Convert to fraction form
    554,205.21/764,802.76 = 299,556.40/x
  3. Step 3: Cross multiply
    554,205.21x = 764,802.76 × 299,556.40
  4. Step 4: Simplify right side
    554,205.21x = 229,101,558,834.77
  5. Step 5: Solve for x
    x = 229,101,558,834.77/554,205.21
  6. Step 6: Final answer
    x = 413,387.59

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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.