Home / 665,353.10-918,188.09-359,429.47

Finding the Fourth Proportional to 665,353.10, 918,188.09 and 359,429.47

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Solution

The fourth proportional to 665,353.10, 918,188.09 and 359,429.47 is: 496,013.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,353.10 : 918,188.09 = 359,429.47 : x
  2. Step 2: Convert to fraction form
    665,353.10/918,188.09 = 359,429.47/x
  3. Step 3: Cross multiply
    665,353.10x = 918,188.09 × 359,429.47
  4. Step 4: Simplify right side
    665,353.10x = 330,023,857,152.12
  5. Step 5: Solve for x
    x = 330,023,857,152.12/665,353.10
  6. Step 6: Final answer
    x = 496,013.10

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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.