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Finding the Fourth Proportional to 484,492.30, 668,448.90 and 274,905.77

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Solution

The fourth proportional to 484,492.30, 668,448.90 and 274,905.77 is: 379,284.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,492.30 : 668,448.90 = 274,905.77 : x
  2. Step 2: Convert to fraction form
    484,492.30/668,448.90 = 274,905.77/x
  3. Step 3: Cross multiply
    484,492.30x = 668,448.90 × 274,905.77
  4. Step 4: Simplify right side
    484,492.30x = 183,760,461,911.89
  5. Step 5: Solve for x
    x = 183,760,461,911.89/484,492.30
  6. Step 6: Final answer
    x = 379,284.58

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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.