Home / 665,830.10-918,845.57-359,905.48

Finding the Fourth Proportional to 665,830.10, 918,845.57 and 359,905.48

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Solution

The fourth proportional to 665,830.10, 918,845.57 and 359,905.48 is: 496,669.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,830.10 : 918,845.57 = 359,905.48 : x
  2. Step 2: Convert to fraction form
    665,830.10/918,845.57 = 359,905.48/x
  3. Step 3: Cross multiply
    665,830.10x = 918,845.57 × 359,905.48
  4. Step 4: Simplify right side
    665,830.10x = 330,697,553,619.61
  5. Step 5: Solve for x
    x = 330,697,553,619.61/665,830.10
  6. Step 6: Final answer
    x = 496,669.58

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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.