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Finding the Fourth Proportional to 619,020.86, 854,245.51 and 347,088.47

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Solution

The fourth proportional to 619,020.86, 854,245.51 and 347,088.47 is: 478,980.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,020.86 : 854,245.51 = 347,088.47 : x
  2. Step 2: Convert to fraction form
    619,020.86/854,245.51 = 347,088.47/x
  3. Step 3: Cross multiply
    619,020.86x = 854,245.51 × 347,088.47
  4. Step 4: Simplify right side
    619,020.86x = 296,498,761,931.32
  5. Step 5: Solve for x
    x = 296,498,761,931.32/619,020.86
  6. Step 6: Final answer
    x = 478,980.25

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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.