Finding the Fourth Proportional to 978,768,810.09, 1,350,730,188.99 and 602,642,386.35
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Solution
The fourth proportional to 978,768,810.09, 1,350,730,188.99 and 602,642,386.35 is: 831,664,491.16
Step by Step Solution
- Step 1: Write the proportion equation
978,768,810.09 : 1,350,730,188.99 = 602,642,386.35 : x - Step 2: Convert to fraction form
978,768,810.09/1,350,730,188.99 = 602,642,386.35/x - Step 3: Cross multiply
978,768,810.09x = 1,350,730,188.99 × 602,642,386.35 - Step 4: Simplify right side
978,768,810.09x = 814,007,264,407,920,128 - Step 5: Solve for x
x = 814,007,264,407,920,128/978,768,810.09 - Step 6: Final answer
x = 831,664,491.16
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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.