Finding the Fourth Proportional to 2,391,492,743.80, 3,587,239,115.70 and 838,941,006.40
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Solution
The fourth proportional to 2,391,492,743.80, 3,587,239,115.70 and 838,941,006.40 is: 1,258,411,509.60
Step by Step Solution
- Step 1: Write the proportion equation
2,391,492,743.80 : 3,587,239,115.70 = 838,941,006.40 : x - Step 2: Convert to fraction form
2,391,492,743.80/3,587,239,115.70 = 838,941,006.40/x - Step 3: Cross multiply
2,391,492,743.80x = 3,587,239,115.70 × 838,941,006.40 - Step 4: Simplify right side
2,391,492,743.80x = 3,009,481,993,922,803,712 - Step 5: Solve for x
x = 3,009,481,993,922,803,712/2,391,492,743.80 - Step 6: Final answer
x = 1,258,411,509.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.