Home / 911,047.20-1,366,538.40-412,411.20

Finding the Fourth Proportional to 911,047.20, 1,366,538.40 and 412,411.20

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Solution

The fourth proportional to 911,047.20, 1,366,538.40 and 412,411.20 is: 618,602.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,047.20 : 1,366,538.40 = 412,411.20 : x
  2. Step 2: Convert to fraction form
    911,047.20/1,366,538.40 = 412,411.20/x
  3. Step 3: Cross multiply
    911,047.20x = 1,366,538.40 × 412,411.20
  4. Step 4: Simplify right side
    911,047.20x = 563,575,741,390.08
  5. Step 5: Solve for x
    x = 563,575,741,390.08/911,047.20
  6. Step 6: Final answer
    x = 618,602.13

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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.