Finding the Fourth Proportional to 390,006,896,646.54, 538,213,880,596.08 and 216,395,179,615.02
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Solution
The fourth proportional to 390,006,896,646.54, 538,213,880,596.08 and 216,395,179,615.02 is: 298,627,768,801.84
Step by Step Solution
- Step 1: Write the proportion equation
390,006,896,646.54 : 538,213,880,596.08 = 216,395,179,615.02 : x - Step 2: Convert to fraction form
390,006,896,646.54/538,213,880,596.08 = 216,395,179,615.02/x - Step 3: Cross multiply
390,006,896,646.54x = 538,213,880,596.08 × 216,395,179,615.02 - Step 4: Simplify right side
390,006,896,646.54x = 116,466,889,362,885,664,833,536 - Step 5: Solve for x
x = 116,466,889,362,885,664,833,536/390,006,896,646.54 - Step 6: Final answer
x = 298,627,768,801.84
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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.