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Finding the Fourth Proportional to 661,505.40, 989,925.30 and 460,884.60

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Solution

The fourth proportional to 661,505.40, 989,925.30 and 460,884.60 is: 689,701.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,505.40 : 989,925.30 = 460,884.60 : x
  2. Step 2: Convert to fraction form
    661,505.40/989,925.30 = 460,884.60/x
  3. Step 3: Cross multiply
    661,505.40x = 989,925.30 × 460,884.60
  4. Step 4: Simplify right side
    661,505.40x = 456,241,325,920.38
  5. Step 5: Solve for x
    x = 456,241,325,920.38/661,505.40
  6. Step 6: Final answer
    x = 689,701.59

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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.