Home / 918,009.10-1,376,065.95-412,812.10

Finding the Fourth Proportional to 918,009.10, 1,376,065.95 and 412,812.10

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Solution

The fourth proportional to 918,009.10, 1,376,065.95 and 412,812.10 is: 618,791.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,009.10 : 1,376,065.95 = 412,812.10 : x
  2. Step 2: Convert to fraction form
    918,009.10/1,376,065.95 = 412,812.10/x
  3. Step 3: Cross multiply
    918,009.10x = 1,376,065.95 × 412,812.10
  4. Step 4: Simplify right side
    918,009.10x = 568,056,674,558.00
  5. Step 5: Solve for x
    x = 568,056,674,558.00/918,009.10
  6. Step 6: Final answer
    x = 618,791.99

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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.