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Finding the Fourth Proportional to 486,328.93, 671,131.31 and 282,429.92

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Solution

The fourth proportional to 486,328.93, 671,131.31 and 282,429.92 is: 389,751.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,328.93 : 671,131.31 = 282,429.92 : x
  2. Step 2: Convert to fraction form
    486,328.93/671,131.31 = 282,429.92/x
  3. Step 3: Cross multiply
    486,328.93x = 671,131.31 × 282,429.92
  4. Step 4: Simplify right side
    486,328.93x = 189,547,562,458.47
  5. Step 5: Solve for x
    x = 189,547,562,458.47/486,328.93
  6. Step 6: Final answer
    x = 389,751.77

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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.