Finding the Fourth Proportional to 979,775,257.07, 1,352,089,258.67 and 539,742,109.07
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Solution
The fourth proportional to 979,775,257.07, 1,352,089,258.67 and 539,742,109.07 is: 744,843,782.14
Step by Step Solution
- Step 1: Write the proportion equation
979,775,257.07 : 1,352,089,258.67 = 539,742,109.07 : x - Step 2: Convert to fraction form
979,775,257.07/1,352,089,258.67 = 539,742,109.07/x - Step 3: Cross multiply
979,775,257.07x = 1,352,089,258.67 × 539,742,109.07 - Step 4: Simplify right side
979,775,257.07x = 729,779,508,122,739,968 - Step 5: Solve for x
x = 729,779,508,122,739,968/979,775,257.07 - Step 6: Final answer
x = 744,843,782.14
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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.