Finding the Fourth Proportional to 1,240,944,125.88, 1,712,502,475.98 and 684,036,473.16
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Solution
The fourth proportional to 1,240,944,125.88, 1,712,502,475.98 and 684,036,473.16 is: 943,970,102.70
Step by Step Solution
- Step 1: Write the proportion equation
1,240,944,125.88 : 1,712,502,475.98 = 684,036,473.16 : x - Step 2: Convert to fraction form
1,240,944,125.88/1,712,502,475.98 = 684,036,473.16/x - Step 3: Cross multiply
1,240,944,125.88x = 1,712,502,475.98 × 684,036,473.16 - Step 4: Simplify right side
1,240,944,125.88x = 1,171,414,153,947,126,784 - Step 5: Solve for x
x = 1,171,414,153,947,126,784/1,240,944,125.88 - Step 6: Final answer
x = 943,970,102.70
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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.