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Finding the Fourth Proportional to 607,007.40, 910,511.10 and 207,515.40

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Solution

The fourth proportional to 607,007.40, 910,511.10 and 207,515.40 is: 311,273.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,007.40 : 910,511.10 = 207,515.40 : x
  2. Step 2: Convert to fraction form
    607,007.40/910,511.10 = 207,515.40/x
  3. Step 3: Cross multiply
    607,007.40x = 910,511.10 × 207,515.40
  4. Step 4: Simplify right side
    607,007.40x = 188,945,075,120.94
  5. Step 5: Solve for x
    x = 188,945,075,120.94/607,007.40
  6. Step 6: Final answer
    x = 311,273.10

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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.