Home / 678,485.69-1,018,195.09-235,253.69

Finding the Fourth Proportional to 678,485.69, 1,018,195.09 and 235,253.69

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Solution

The fourth proportional to 678,485.69, 1,018,195.09 and 235,253.69 is: 353,042.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,485.69 : 1,018,195.09 = 235,253.69 : x
  2. Step 2: Convert to fraction form
    678,485.69/1,018,195.09 = 235,253.69/x
  3. Step 3: Cross multiply
    678,485.69x = 1,018,195.09 × 235,253.69
  4. Step 4: Simplify right side
    678,485.69x = 239,534,152,062.38
  5. Step 5: Solve for x
    x = 239,534,152,062.38/678,485.69
  6. Step 6: Final answer
    x = 353,042.31

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.