Home / 928,015.04-1,280,750.64-520,186.16

Finding the Fourth Proportional to 928,015.04, 1,280,750.64 and 520,186.16

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Solution

The fourth proportional to 928,015.04, 1,280,750.64 and 520,186.16 is: 717,907.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,015.04 : 1,280,750.64 = 520,186.16 : x
  2. Step 2: Convert to fraction form
    928,015.04/1,280,750.64 = 520,186.16/x
  3. Step 3: Cross multiply
    928,015.04x = 1,280,750.64 × 520,186.16
  4. Step 4: Simplify right side
    928,015.04x = 666,228,757,339.14
  5. Step 5: Solve for x
    x = 666,228,757,339.14/928,015.04
  6. Step 6: Final answer
    x = 717,907.28

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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.