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Finding the Fourth Proportional to 990,081, 1,484,883.63 and 457,089.96

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Solution

The fourth proportional to 990,081, 1,484,883.63 and 457,089.96 is: 685,525.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,081 : 1,484,883.63 = 457,089.96 : x
  2. Step 2: Convert to fraction form
    990,081/1,484,883.63 = 457,089.96/x
  3. Step 3: Cross multiply
    990,081x = 1,484,883.63 × 457,089.96
  4. Step 4: Simplify right side
    990,081x = 678,725,399,041.36
  5. Step 5: Solve for x
    x = 678,725,399,041.36/990,081
  6. Step 6: Final answer
    x = 685,525.12

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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.