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Finding the Fourth Proportional to 389,640.16, 584,329.02 and 314,582.32

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Solution

The fourth proportional to 389,640.16, 584,329.02 and 314,582.32 is: 471,767.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,640.16 : 584,329.02 = 314,582.32 : x
  2. Step 2: Convert to fraction form
    389,640.16/584,329.02 = 314,582.32/x
  3. Step 3: Cross multiply
    389,640.16x = 584,329.02 × 314,582.32
  4. Step 4: Simplify right side
    389,640.16x = 183,819,578,754.93
  5. Step 5: Solve for x
    x = 183,819,578,754.93/389,640.16
  6. Step 6: Final answer
    x = 471,767.54

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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.