Home / 817,759.10-1,128,482.44-455,173.64

Finding the Fourth Proportional to 817,759.10, 1,128,482.44 and 455,173.64

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Solution

The fourth proportional to 817,759.10, 1,128,482.44 and 455,173.64 is: 628,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,759.10 : 1,128,482.44 = 455,173.64 : x
  2. Step 2: Convert to fraction form
    817,759.10/1,128,482.44 = 455,173.64/x
  3. Step 3: Cross multiply
    817,759.10x = 1,128,482.44 × 455,173.64
  4. Step 4: Simplify right side
    817,759.10x = 513,655,457,342.34
  5. Step 5: Solve for x
    x = 513,655,457,342.34/817,759.10
  6. Step 6: Final answer
    x = 628,125.64

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Double scale
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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.