Finding the Fourth Proportional to 977,580,902.05, 1,468,071,964.28 and 518,415,878.05
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Solution
The fourth proportional to 977,580,902.05, 1,468,071,964.28 and 518,415,878.05 is: 778,525,659.42
Step by Step Solution
- Step 1: Write the proportion equation
977,580,902.05 : 1,468,071,964.28 = 518,415,878.05 : x - Step 2: Convert to fraction form
977,580,902.05/1,468,071,964.28 = 518,415,878.05/x - Step 3: Cross multiply
977,580,902.05x = 1,468,071,964.28 × 518,415,878.05 - Step 4: Simplify right side
977,580,902.05x = 761,071,816,400,212,480 - Step 5: Solve for x
x = 761,071,816,400,212,480/977,580,902.05 - Step 6: Final answer
x = 778,525,659.42
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Double scale
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1.5x scale
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.