Home / 1,089,406.56-1,503,381-612,478.56

Finding the Fourth Proportional to 1,089,406.56, 1,503,381 and 612,478.56

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Solution

The fourth proportional to 1,089,406.56, 1,503,381 and 612,478.56 is: 845,220.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,406.56 : 1,503,381 = 612,478.56 : x
  2. Step 2: Convert to fraction form
    1,089,406.56/1,503,381 = 612,478.56/x
  3. Step 3: Cross multiply
    1,089,406.56x = 1,503,381 × 612,478.56
  4. Step 4: Simplify right side
    1,089,406.56x = 920,788,630,011.36
  5. Step 5: Solve for x
    x = 920,788,630,011.36/1,089,406.56
  6. Step 6: Final answer
    x = 845,220.38

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Half scale
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Double scale
Find fourth proportional to 1,089,407.56, 1,503,382.38 and 612,479.56
Similar ratio
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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.