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Finding the Fourth Proportional to 611,430.69, 916,833.83 and 359,203.89

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Solution

The fourth proportional to 611,430.69, 916,833.83 and 359,203.89 is: 538,622.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,430.69 : 916,833.83 = 359,203.89 : x
  2. Step 2: Convert to fraction form
    611,430.69/916,833.83 = 359,203.89/x
  3. Step 3: Cross multiply
    611,430.69x = 916,833.83 × 359,203.89
  4. Step 4: Simplify right side
    611,430.69x = 329,330,276,423.58
  5. Step 5: Solve for x
    x = 329,330,276,423.58/611,430.69
  6. Step 6: Final answer
    x = 538,622.42

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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.