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Finding the Fourth Proportional to 657,669.40, 986,504.10 and 303,375.40

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Solution

The fourth proportional to 657,669.40, 986,504.10 and 303,375.40 is: 455,063.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,669.40 : 986,504.10 = 303,375.40 : x
  2. Step 2: Convert to fraction form
    657,669.40/986,504.10 = 303,375.40/x
  3. Step 3: Cross multiply
    657,669.40x = 986,504.10 × 303,375.40
  4. Step 4: Simplify right side
    657,669.40x = 299,281,075,939.14
  5. Step 5: Solve for x
    x = 299,281,075,939.14/657,669.40
  6. Step 6: Final answer
    x = 455,063.10

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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.