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Finding the Fourth Proportional to 993,878.80, 1,490,818.20 and 657,955.60

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Solution

The fourth proportional to 993,878.80, 1,490,818.20 and 657,955.60 is: 986,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,878.80 : 1,490,818.20 = 657,955.60 : x
  2. Step 2: Convert to fraction form
    993,878.80/1,490,818.20 = 657,955.60/x
  3. Step 3: Cross multiply
    993,878.80x = 1,490,818.20 × 657,955.60
  4. Step 4: Simplify right side
    993,878.80x = 980,892,183,271.92
  5. Step 5: Solve for x
    x = 980,892,183,271.92/993,878.80
  6. Step 6: Final answer
    x = 986,933.40

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Similar ratio
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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.