Finding the Fourth Proportional to 1,210,239,257.18, 1,670,192,235.51 and 740,192,943.74
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Solution
The fourth proportional to 1,210,239,257.18, 1,670,192,235.51 and 740,192,943.74 is: 1,021,504,219.17
Step by Step Solution
- Step 1: Write the proportion equation
1,210,239,257.18 : 1,670,192,235.51 = 740,192,943.74 : x - Step 2: Convert to fraction form
1,210,239,257.18/1,670,192,235.51 = 740,192,943.74/x - Step 3: Cross multiply
1,210,239,257.18x = 1,670,192,235.51 × 740,192,943.74 - Step 4: Simplify right side
1,210,239,257.18x = 1,236,264,507,413,838,336 - Step 5: Solve for x
x = 1,236,264,507,413,838,336/1,210,239,257.18 - Step 6: Final answer
x = 1,021,504,219.17
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1.5x scale
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.