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Finding the Fourth Proportional to 848,567, 1,272,009.72 and 398,482.20

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Solution

The fourth proportional to 848,567, 1,272,009.72 and 398,482.20 is: 597,328.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    848,567 : 1,272,009.72 = 398,482.20 : x
  2. Step 2: Convert to fraction form
    848,567/1,272,009.72 = 398,482.20/x
  3. Step 3: Cross multiply
    848,567x = 1,272,009.72 × 398,482.20
  4. Step 4: Simplify right side
    848,567x = 506,873,231,646.98
  5. Step 5: Solve for x
    x = 506,873,231,646.98/848,567
  6. Step 6: Final answer
    x = 597,328.47

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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.