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Finding the Fourth Proportional to 580,356.77, 870,238.79 and 340,938.28

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Solution

The fourth proportional to 580,356.77, 870,238.79 and 340,938.28 is: 511,233.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,356.77 : 870,238.79 = 340,938.28 : x
  2. Step 2: Convert to fraction form
    580,356.77/870,238.79 = 340,938.28/x
  3. Step 3: Cross multiply
    580,356.77x = 870,238.79 × 340,938.28
  4. Step 4: Simplify right side
    580,356.77x = 296,697,716,913.51
  5. Step 5: Solve for x
    x = 296,697,716,913.51/580,356.77
  6. Step 6: Final answer
    x = 511,233.32

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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.