Home / 678,333.40-1,017,500.10-205,091.80

Finding the Fourth Proportional to 678,333.40, 1,017,500.10 and 205,091.80

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Solution

The fourth proportional to 678,333.40, 1,017,500.10 and 205,091.80 is: 307,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,333.40 : 1,017,500.10 = 205,091.80 : x
  2. Step 2: Convert to fraction form
    678,333.40/1,017,500.10 = 205,091.80/x
  3. Step 3: Cross multiply
    678,333.40x = 1,017,500.10 × 205,091.80
  4. Step 4: Simplify right side
    678,333.40x = 208,680,927,009.18
  5. Step 5: Solve for x
    x = 208,680,927,009.18/678,333.40
  6. Step 6: Final answer
    x = 307,637.70

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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.