Finding the Fourth Proportional to 1,241,229,189.79, 1,712,908,172.18 and 684,332,209.63
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Solution
The fourth proportional to 1,241,229,189.79, 1,712,908,172.18 and 684,332,209.63 is: 944,385,004.80
Step by Step Solution
- Step 1: Write the proportion equation
1,241,229,189.79 : 1,712,908,172.18 = 684,332,209.63 : x - Step 2: Convert to fraction form
1,241,229,189.79/1,712,908,172.18 = 684,332,209.63/x - Step 3: Cross multiply
1,241,229,189.79x = 1,712,908,172.18 × 684,332,209.63 - Step 4: Simplify right side
1,241,229,189.79x = 1,172,198,234,349,237,760 - Step 5: Solve for x
x = 1,172,198,234,349,237,760/1,241,229,189.79 - Step 6: Final answer
x = 944,385,004.80
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Double scale
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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.