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Finding the Fourth Proportional to 478,441, 660,248.58 and 277,353.64

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Solution

The fourth proportional to 478,441, 660,248.58 and 277,353.64 is: 382,748.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,441 : 660,248.58 = 277,353.64 : x
  2. Step 2: Convert to fraction form
    478,441/660,248.58 = 277,353.64/x
  3. Step 3: Cross multiply
    478,441x = 660,248.58 × 277,353.64
  4. Step 4: Simplify right side
    478,441x = 183,122,346,967.83
  5. Step 5: Solve for x
    x = 183,122,346,967.83/478,441
  6. Step 6: Final answer
    x = 382,748.02

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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.