Home / 913,389.21-1,260,479.43-505,519.11

Finding the Fourth Proportional to 913,389.21, 1,260,479.43 and 505,519.11

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Solution

The fourth proportional to 913,389.21, 1,260,479.43 and 505,519.11 is: 697,617.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,389.21 : 1,260,479.43 = 505,519.11 : x
  2. Step 2: Convert to fraction form
    913,389.21/1,260,479.43 = 505,519.11/x
  3. Step 3: Cross multiply
    913,389.21x = 1,260,479.43 × 505,519.11
  4. Step 4: Simplify right side
    913,389.21x = 637,196,439,626.91
  5. Step 5: Solve for x
    x = 637,196,439,626.91/913,389.21
  6. Step 6: Final answer
    x = 697,617.66

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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.