Home / 678,307.56-1,017,605.34-257,574.12

Finding the Fourth Proportional to 678,307.56, 1,017,605.34 and 257,574.12

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Solution

The fourth proportional to 678,307.56, 1,017,605.34 and 257,574.12 is: 386,415.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,307.56 : 1,017,605.34 = 257,574.12 : x
  2. Step 2: Convert to fraction form
    678,307.56/1,017,605.34 = 257,574.12/x
  3. Step 3: Cross multiply
    678,307.56x = 1,017,605.34 × 257,574.12
  4. Step 4: Simplify right side
    678,307.56x = 262,108,799,957.80
  5. Step 5: Solve for x
    x = 262,108,799,957.80/678,307.56
  6. Step 6: Final answer
    x = 386,415.86

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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.