Finding the Fourth Proportional to 1,438,196,275.44, 1,984,710,828.96 and 778,146,553.44
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Solution
The fourth proportional to 1,438,196,275.44, 1,984,710,828.96 and 778,146,553.44 is: 1,073,842,226.89
Step by Step Solution
- Step 1: Write the proportion equation
1,438,196,275.44 : 1,984,710,828.96 = 778,146,553.44 : x - Step 2: Convert to fraction form
1,438,196,275.44/1,984,710,828.96 = 778,146,553.44/x - Step 3: Cross multiply
1,438,196,275.44x = 1,984,710,828.96 × 778,146,553.44 - Step 4: Simplify right side
1,438,196,275.44x = 1,544,395,891,130,269,440 - Step 5: Solve for x
x = 1,544,395,891,130,269,440/1,438,196,275.44 - Step 6: Final answer
x = 1,073,842,226.89
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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.