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Finding the Fourth Proportional to 617,599.10, 851,609.94 and 402,339.98

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Solution

The fourth proportional to 617,599.10, 851,609.94 and 402,339.98 is: 554,788.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,599.10 : 851,609.94 = 402,339.98 : x
  2. Step 2: Convert to fraction form
    617,599.10/851,609.94 = 402,339.98/x
  3. Step 3: Cross multiply
    617,599.10x = 851,609.94 × 402,339.98
  4. Step 4: Simplify right side
    617,599.10x = 342,636,721,969.35
  5. Step 5: Solve for x
    x = 342,636,721,969.35/617,599.10
  6. Step 6: Final answer
    x = 554,788.25

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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.