Home / 678,305.81-1,017,602.72-257,572.37

Finding the Fourth Proportional to 678,305.81, 1,017,602.72 and 257,572.37

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Solution

The fourth proportional to 678,305.81, 1,017,602.72 and 257,572.37 is: 386,413.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,305.81 : 1,017,602.72 = 257,572.37 : x
  2. Step 2: Convert to fraction form
    678,305.81/1,017,602.72 = 257,572.37/x
  3. Step 3: Cross multiply
    678,305.81x = 1,017,602.72 × 257,572.37
  4. Step 4: Simplify right side
    678,305.81x = 262,106,343,020.99
  5. Step 5: Solve for x
    x = 262,106,343,020.99/678,305.81
  6. Step 6: Final answer
    x = 386,413.24

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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.