Home / 678,395.34-1,017,740.61-205,068.38

Finding the Fourth Proportional to 678,395.34, 1,017,740.61 and 205,068.38

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Solution

The fourth proportional to 678,395.34, 1,017,740.61 and 205,068.38 is: 307,647.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,395.34 : 1,017,740.61 = 205,068.38 : x
  2. Step 2: Convert to fraction form
    678,395.34/1,017,740.61 = 205,068.38/x
  3. Step 3: Cross multiply
    678,395.34x = 1,017,740.61 × 205,068.38
  4. Step 4: Simplify right side
    678,395.34x = 208,706,413,064.21
  5. Step 5: Solve for x
    x = 208,706,413,064.21/678,395.34
  6. Step 6: Final answer
    x = 307,647.18

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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.