Finding the Fourth Proportional to 1,280,679,927.84, 1,921,133,324.16 and 360,564,238.08
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Solution
The fourth proportional to 1,280,679,927.84, 1,921,133,324.16 and 360,564,238.08 is: 540,878,293.02
Step by Step Solution
- Step 1: Write the proportion equation
1,280,679,927.84 : 1,921,133,324.16 = 360,564,238.08 : x - Step 2: Convert to fraction form
1,280,679,927.84/1,921,133,324.16 = 360,564,238.08/x - Step 3: Cross multiply
1,280,679,927.84x = 1,921,133,324.16 × 360,564,238.08 - Step 4: Simplify right side
1,280,679,927.84x = 692,691,973,275,848,064 - Step 5: Solve for x
x = 692,691,973,275,848,064/1,280,679,927.84 - Step 6: Final answer
x = 540,878,293.02
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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.