Home / 501,854.10-691,601.55-492,629.82

Finding the Fourth Proportional to 501,854.10, 691,601.55 and 492,629.82

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Solution

The fourth proportional to 501,854.10, 691,601.55 and 492,629.82 is: 678,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,854.10 : 691,601.55 = 492,629.82 : x
  2. Step 2: Convert to fraction form
    501,854.10/691,601.55 = 492,629.82/x
  3. Step 3: Cross multiply
    501,854.10x = 691,601.55 × 492,629.82
  4. Step 4: Simplify right side
    501,854.10x = 340,703,547,088.22
  5. Step 5: Solve for x
    x = 340,703,547,088.22/501,854.10
  6. Step 6: Final answer
    x = 678,889.64

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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.