Home / 772,245.60-1,158,368.40-638,401.20

Finding the Fourth Proportional to 772,245.60, 1,158,368.40 and 638,401.20

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Solution

The fourth proportional to 772,245.60, 1,158,368.40 and 638,401.20 is: 957,601.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,245.60 : 1,158,368.40 = 638,401.20 : x
  2. Step 2: Convert to fraction form
    772,245.60/1,158,368.40 = 638,401.20/x
  3. Step 3: Cross multiply
    772,245.60x = 1,158,368.40 × 638,401.20
  4. Step 4: Simplify right side
    772,245.60x = 739,503,776,602.08
  5. Step 5: Solve for x
    x = 739,503,776,602.08/772,245.60
  6. Step 6: Final answer
    x = 957,601.80

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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.