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Finding the Fourth Proportional to 577,073.09, 796,457.75 and 390,720.04

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Solution

The fourth proportional to 577,073.09, 796,457.75 and 390,720.04 is: 539,259.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,073.09 : 796,457.75 = 390,720.04 : x
  2. Step 2: Convert to fraction form
    577,073.09/796,457.75 = 390,720.04/x
  3. Step 3: Cross multiply
    577,073.09x = 796,457.75 × 390,720.04
  4. Step 4: Simplify right side
    577,073.09x = 311,191,999,993.57
  5. Step 5: Solve for x
    x = 311,191,999,993.57/577,073.09
  6. Step 6: Final answer
    x = 539,259.24

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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.