Home / 990,315.69-1,485,574.20-341,807.49

Finding the Fourth Proportional to 990,315.69, 1,485,574.20 and 341,807.49

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Solution

The fourth proportional to 990,315.69, 1,485,574.20 and 341,807.49 is: 512,745.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,315.69 : 1,485,574.20 = 341,807.49 : x
  2. Step 2: Convert to fraction form
    990,315.69/1,485,574.20 = 341,807.49/x
  3. Step 3: Cross multiply
    990,315.69x = 1,485,574.20 × 341,807.49
  4. Step 4: Simplify right side
    990,315.69x = 507,780,388,510.76
  5. Step 5: Solve for x
    x = 507,780,388,510.76/990,315.69
  6. Step 6: Final answer
    x = 512,745.98

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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.