Finding the Fourth Proportional to 1,220,009,617.68, 1,683,630,322.92 and 663,092,497.68
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Solution
The fourth proportional to 1,220,009,617.68, 1,683,630,322.92 and 663,092,497.68 is: 915,076,914.00
Step by Step Solution
- Step 1: Write the proportion equation
1,220,009,617.68 : 1,683,630,322.92 = 663,092,497.68 : x - Step 2: Convert to fraction form
1,220,009,617.68/1,683,630,322.92 = 663,092,497.68/x - Step 3: Cross multiply
1,220,009,617.68x = 1,683,630,322.92 × 663,092,497.68 - Step 4: Simplify right side
1,220,009,617.68x = 1,116,402,635,994,807,680 - Step 5: Solve for x
x = 1,116,402,635,994,807,680/1,220,009,617.68 - Step 6: Final answer
x = 915,076,914.00
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1.5x scale
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.