Home / 1,390,224.21-1,918,538.55-786,612.21

Finding the Fourth Proportional to 1,390,224.21, 1,918,538.55 and 786,612.21

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Solution

The fourth proportional to 1,390,224.21, 1,918,538.55 and 786,612.21 is: 1,085,541.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,224.21 : 1,918,538.55 = 786,612.21 : x
  2. Step 2: Convert to fraction form
    1,390,224.21/1,918,538.55 = 786,612.21/x
  3. Step 3: Cross multiply
    1,390,224.21x = 1,918,538.55 × 786,612.21
  4. Step 4: Simplify right side
    1,390,224.21x = 1,509,145,848,785.70
  5. Step 5: Solve for x
    x = 1,509,145,848,785.70/1,390,224.21
  6. Step 6: Final answer
    x = 1,085,541.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.