Finding the Fourth Proportional to 688,794,646.29, 950,495,651.39 and 391,395,612.62
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Solution
The fourth proportional to 688,794,646.29, 950,495,651.39 and 391,395,612.62 is: 540,102,670.32
Step by Step Solution
- Step 1: Write the proportion equation
688,794,646.29 : 950,495,651.39 = 391,395,612.62 : x - Step 2: Convert to fraction form
688,794,646.29/950,495,651.39 = 391,395,612.62/x - Step 3: Cross multiply
688,794,646.29x = 950,495,651.39 × 391,395,612.62 - Step 4: Simplify right side
688,794,646.29x = 372,019,827,761,725,568 - Step 5: Solve for x
x = 372,019,827,761,725,568/688,794,646.29 - Step 6: Final answer
x = 540,102,670.32
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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.