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Finding the Fourth Proportional to 478,572.82, 660,430.55 and 277,485.46

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Solution

The fourth proportional to 478,572.82, 660,430.55 and 277,485.46 is: 382,929.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,572.82 : 660,430.55 = 277,485.46 : x
  2. Step 2: Convert to fraction form
    478,572.82/660,430.55 = 277,485.46/x
  3. Step 3: Cross multiply
    478,572.82x = 660,430.55 × 277,485.46
  4. Step 4: Simplify right side
    478,572.82x = 183,259,874,964.80
  5. Step 5: Solve for x
    x = 183,259,874,964.80/478,572.82
  6. Step 6: Final answer
    x = 382,929.97

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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.