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Finding the Fourth Proportional to 612,590.61, 845,251.16 and 357,892.59

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Solution

The fourth proportional to 612,590.61, 845,251.16 and 357,892.59 is: 493,819.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,590.61 : 845,251.16 = 357,892.59 : x
  2. Step 2: Convert to fraction form
    612,590.61/845,251.16 = 357,892.59/x
  3. Step 3: Cross multiply
    612,590.61x = 845,251.16 × 357,892.59
  4. Step 4: Simplify right side
    612,590.61x = 302,509,125,063.44
  5. Step 5: Solve for x
    x = 302,509,125,063.44/612,590.61
  6. Step 6: Final answer
    x = 493,819.40

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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.