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Finding the Fourth Proportional to 631,271.80, 946,907.70 and 519,078.70

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Solution

The fourth proportional to 631,271.80, 946,907.70 and 519,078.70 is: 778,618.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,271.80 : 946,907.70 = 519,078.70 : x
  2. Step 2: Convert to fraction form
    631,271.80/946,907.70 = 519,078.70/x
  3. Step 3: Cross multiply
    631,271.80x = 946,907.70 × 519,078.70
  4. Step 4: Simplify right side
    631,271.80x = 491,519,617,935.99
  5. Step 5: Solve for x
    x = 491,519,617,935.99/631,271.80
  6. Step 6: Final answer
    x = 778,618.05

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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.