Finding the Fourth Proportional to 1,280,970,316.95, 1,767,725,968.08 and 716,453,851.00
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Solution
The fourth proportional to 1,280,970,316.95, 1,767,725,968.08 and 716,453,851.00 is: 988,699,004.64
Step by Step Solution
- Step 1: Write the proportion equation
1,280,970,316.95 : 1,767,725,968.08 = 716,453,851.00 : x - Step 2: Convert to fraction form
1,280,970,316.95/1,767,725,968.08 = 716,453,851.00/x - Step 3: Cross multiply
1,280,970,316.95x = 1,767,725,968.08 × 716,453,851.00 - Step 4: Simplify right side
1,280,970,316.95x = 1,266,494,077,340,118,272 - Step 5: Solve for x
x = 1,266,494,077,340,118,272/1,280,970,316.95 - Step 6: Final answer
x = 988,699,004.64
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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.