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Finding the Fourth Proportional to 657,657.40, 986,486.10 and 303,363.40

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Solution

The fourth proportional to 657,657.40, 986,486.10 and 303,363.40 is: 455,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,657.40 : 986,486.10 = 303,363.40 : x
  2. Step 2: Convert to fraction form
    657,657.40/986,486.10 = 303,363.40/x
  3. Step 3: Cross multiply
    657,657.40x = 986,486.10 × 303,363.40
  4. Step 4: Simplify right side
    657,657.40x = 299,263,777,348.74
  5. Step 5: Solve for x
    x = 299,263,777,348.74/657,657.40
  6. Step 6: Final answer
    x = 455,045.10

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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.