Finding the Fourth Proportional to 498,752,645.62, 688,249,069.68 and 275,721,026.53
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Solution
The fourth proportional to 498,752,645.62, 688,249,069.68 and 275,721,026.53 is: 380,478,663.46
Step by Step Solution
- Step 1: Write the proportion equation
498,752,645.62 : 688,249,069.68 = 275,721,026.53 : x - Step 2: Convert to fraction form
498,752,645.62/688,249,069.68 = 275,721,026.53/x - Step 3: Cross multiply
498,752,645.62x = 688,249,069.68 × 275,721,026.53 - Step 4: Simplify right side
498,752,645.62x = 189,764,740,000,487,072 - Step 5: Solve for x
x = 189,764,740,000,487,072/498,752,645.62 - Step 6: Final answer
x = 380,478,663.46
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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.