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Finding the Fourth Proportional to 478,670.96, 660,805.08 and 370,999.28

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Solution

The fourth proportional to 478,670.96, 660,805.08 and 370,999.28 is: 512,164.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,670.96 : 660,805.08 = 370,999.28 : x
  2. Step 2: Convert to fraction form
    478,670.96/660,805.08 = 370,999.28/x
  3. Step 3: Cross multiply
    478,670.96x = 660,805.08 × 370,999.28
  4. Step 4: Simplify right side
    478,670.96x = 245,158,208,900.34
  5. Step 5: Solve for x
    x = 245,158,208,900.34/478,670.96
  6. Step 6: Final answer
    x = 512,164.37

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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.