Home / 666,345.60-919,548.72-379,856.16

Finding the Fourth Proportional to 666,345.60, 919,548.72 and 379,856.16

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Solution

The fourth proportional to 666,345.60, 919,548.72 and 379,856.16 is: 524,196.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,345.60 : 919,548.72 = 379,856.16 : x
  2. Step 2: Convert to fraction form
    666,345.60/919,548.72 = 379,856.16/x
  3. Step 3: Cross multiply
    666,345.60x = 919,548.72 × 379,856.16
  4. Step 4: Simplify right side
    666,345.60x = 349,296,245,712.12
  5. Step 5: Solve for x
    x = 349,296,245,712.12/666,345.60
  6. Step 6: Final answer
    x = 524,196.82

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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.