Finding the Fourth Proportional to 1,021,878,584.21, 1,410,193,014.08 and 551,979,909.74
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Solution
The fourth proportional to 1,021,878,584.21, 1,410,193,014.08 and 551,979,909.74 is: 761,732,582.18
Step by Step Solution
- Step 1: Write the proportion equation
1,021,878,584.21 : 1,410,193,014.08 = 551,979,909.74 : x - Step 2: Convert to fraction form
1,021,878,584.21/1,410,193,014.08 = 551,979,909.74/x - Step 3: Cross multiply
1,021,878,584.21x = 1,410,193,014.08 × 551,979,909.74 - Step 4: Simplify right side
1,021,878,584.21x = 778,398,212,618,046,080 - Step 5: Solve for x
x = 778,398,212,618,046,080/1,021,878,584.21 - Step 6: Final answer
x = 761,732,582.18
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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.