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Finding the Fourth Proportional to 612,236.60, 845,115.72 and 459,715.40

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Solution

The fourth proportional to 612,236.60, 845,115.72 and 459,715.40 is: 634,579.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,236.60 : 845,115.72 = 459,715.40 : x
  2. Step 2: Convert to fraction form
    612,236.60/845,115.72 = 459,715.40/x
  3. Step 3: Cross multiply
    612,236.60x = 845,115.72 × 459,715.40
  4. Step 4: Simplify right side
    612,236.60x = 388,512,711,266.09
  5. Step 5: Solve for x
    x = 388,512,711,266.09/612,236.60
  6. Step 6: Final answer
    x = 634,579.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.