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Finding the Fourth Proportional to 616,051.40, 923,858.40 and 426,511.40

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Solution

The fourth proportional to 616,051.40, 923,858.40 and 426,511.40 is: 639,615.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,051.40 : 923,858.40 = 426,511.40 : x
  2. Step 2: Convert to fraction form
    616,051.40/923,858.40 = 426,511.40/x
  3. Step 3: Cross multiply
    616,051.40x = 923,858.40 × 426,511.40
  4. Step 4: Simplify right side
    616,051.40x = 394,036,139,585.76
  5. Step 5: Solve for x
    x = 394,036,139,585.76/616,051.40
  6. Step 6: Final answer
    x = 639,615.69

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1.5x scale

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.