Home / 718,617.36-1,078,346.16-399,038.40

Finding the Fourth Proportional to 718,617.36, 1,078,346.16 and 399,038.40

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Solution

The fourth proportional to 718,617.36, 1,078,346.16 and 399,038.40 is: 598,790.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,617.36 : 1,078,346.16 = 399,038.40 : x
  2. Step 2: Convert to fraction form
    718,617.36/1,078,346.16 = 399,038.40/x
  3. Step 3: Cross multiply
    718,617.36x = 1,078,346.16 × 399,038.40
  4. Step 4: Simplify right side
    718,617.36x = 430,301,526,332.54
  5. Step 5: Solve for x
    x = 430,301,526,332.54/718,617.36
  6. Step 6: Final answer
    x = 598,790.89

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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.