Home / 928,146.36-1,280,920.32-520,241.70

Finding the Fourth Proportional to 928,146.36, 1,280,920.32 and 520,241.70

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Solution

The fourth proportional to 928,146.36, 1,280,920.32 and 520,241.70 is: 717,977.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,146.36 : 1,280,920.32 = 520,241.70 : x
  2. Step 2: Convert to fraction form
    928,146.36/1,280,920.32 = 520,241.70/x
  3. Step 3: Cross multiply
    928,146.36x = 1,280,920.32 × 520,241.70
  4. Step 4: Simplify right side
    928,146.36x = 666,388,164,841.34
  5. Step 5: Solve for x
    x = 666,388,164,841.34/928,146.36
  6. Step 6: Final answer
    x = 717,977.46

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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.