Home / 912,004.56-1,368,153.88-280,918.16

Finding the Fourth Proportional to 912,004.56, 1,368,153.88 and 280,918.16

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Solution

The fourth proportional to 912,004.56, 1,368,153.88 and 280,918.16 is: 421,422.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,004.56 : 1,368,153.88 = 280,918.16 : x
  2. Step 2: Convert to fraction form
    912,004.56/1,368,153.88 = 280,918.16/x
  3. Step 3: Cross multiply
    912,004.56x = 1,368,153.88 × 280,918.16
  4. Step 4: Simplify right side
    912,004.56x = 384,339,270,566.46
  5. Step 5: Solve for x
    x = 384,339,270,566.46/912,004.56
  6. Step 6: Final answer
    x = 421,422.53

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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.