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Finding the Fourth Proportional to 585,425.03, 807,590.66 and 391,840.83

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Solution

The fourth proportional to 585,425.03, 807,590.66 and 391,840.83 is: 540,542.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,425.03 : 807,590.66 = 391,840.83 : x
  2. Step 2: Convert to fraction form
    585,425.03/807,590.66 = 391,840.83/x
  3. Step 3: Cross multiply
    585,425.03x = 807,590.66 × 391,840.83
  4. Step 4: Simplify right side
    585,425.03x = 316,446,992,555.44
  5. Step 5: Solve for x
    x = 316,446,992,555.44/585,425.03
  6. Step 6: Final answer
    x = 540,542.31

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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.