Home / 990,135-1,484,964.66-457,143.93

Finding the Fourth Proportional to 990,135, 1,484,964.66 and 457,143.93

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Solution

The fourth proportional to 990,135, 1,484,964.66 and 457,143.93 is: 685,606.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,135 : 1,484,964.66 = 457,143.93 : x
  2. Step 2: Convert to fraction form
    990,135/1,484,964.66 = 457,143.93/x
  3. Step 3: Cross multiply
    990,135x = 1,484,964.66 × 457,143.93
  4. Step 4: Simplify right side
    990,135x = 678,842,580,583.51
  5. Step 5: Solve for x
    x = 678,842,580,583.51/990,135
  6. Step 6: Final answer
    x = 685,606.08

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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.