Home / 678,801.60-1,017,943.20-205,329.60

Finding the Fourth Proportional to 678,801.60, 1,017,943.20 and 205,329.60

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Solution

The fourth proportional to 678,801.60, 1,017,943.20 and 205,329.60 is: 307,916.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,801.60 : 1,017,943.20 = 205,329.60 : x
  2. Step 2: Convert to fraction form
    678,801.60/1,017,943.20 = 205,329.60/x
  3. Step 3: Cross multiply
    678,801.60x = 1,017,943.20 × 205,329.60
  4. Step 4: Simplify right side
    678,801.60x = 209,013,870,078.72
  5. Step 5: Solve for x
    x = 209,013,870,078.72/678,801.60
  6. Step 6: Final answer
    x = 307,916.00

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1.5x scale

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.