Home / 811,051.65-1,119,234.92-448,490.79

Finding the Fourth Proportional to 811,051.65, 1,119,234.92 and 448,490.79

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Solution

The fourth proportional to 811,051.65, 1,119,234.92 and 448,490.79 is: 618,908.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,051.65 : 1,119,234.92 = 448,490.79 : x
  2. Step 2: Convert to fraction form
    811,051.65/1,119,234.92 = 448,490.79/x
  3. Step 3: Cross multiply
    811,051.65x = 1,119,234.92 × 448,490.79
  4. Step 4: Simplify right side
    811,051.65x = 501,966,551,223.93
  5. Step 5: Solve for x
    x = 501,966,551,223.93/811,051.65
  6. Step 6: Final answer
    x = 618,908.24

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Double scale
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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.