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Finding the Fourth Proportional to 505,079.76, 697,272.12 and 368,960.88

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Solution

The fourth proportional to 505,079.76, 697,272.12 and 368,960.88 is: 509,357.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,079.76 : 697,272.12 = 368,960.88 : x
  2. Step 2: Convert to fraction form
    505,079.76/697,272.12 = 368,960.88/x
  3. Step 3: Cross multiply
    505,079.76x = 697,272.12 × 368,960.88
  4. Step 4: Simplify right side
    505,079.76x = 257,266,134,994.67
  5. Step 5: Solve for x
    x = 257,266,134,994.67/505,079.76
  6. Step 6: Final answer
    x = 509,357.44

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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.