Home / 916,399.70-1,264,570.81-508,475.69

Finding the Fourth Proportional to 916,399.70, 1,264,570.81 and 508,475.69

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Solution

The fourth proportional to 916,399.70, 1,264,570.81 and 508,475.69 is: 701,662.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,399.70 : 1,264,570.81 = 508,475.69 : x
  2. Step 2: Convert to fraction form
    916,399.70/1,264,570.81 = 508,475.69/x
  3. Step 3: Cross multiply
    916,399.70x = 1,264,570.81 × 508,475.69
  4. Step 4: Simplify right side
    916,399.70x = 643,003,507,574.57
  5. Step 5: Solve for x
    x = 643,003,507,574.57/916,399.70
  6. Step 6: Final answer
    x = 701,662.73

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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.