Home / 685,715.40-1,028,573.10-242,483.40

Finding the Fourth Proportional to 685,715.40, 1,028,573.10 and 242,483.40

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Solution

The fourth proportional to 685,715.40, 1,028,573.10 and 242,483.40 is: 363,725.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,715.40 : 1,028,573.10 = 242,483.40 : x
  2. Step 2: Convert to fraction form
    685,715.40/1,028,573.10 = 242,483.40/x
  3. Step 3: Cross multiply
    685,715.40x = 1,028,573.10 × 242,483.40
  4. Step 4: Simplify right side
    685,715.40x = 249,411,902,436.54
  5. Step 5: Solve for x
    x = 249,411,902,436.54/685,715.40
  6. Step 6: Final answer
    x = 363,725.10

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.