Finding the Fourth Proportional to 1,380,605,931.68, 2,071,199,744.28 and 447,855,948.08
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Solution
The fourth proportional to 1,380,605,931.68, 2,071,199,744.28 and 447,855,948.08 is: 671,878,270.15
Step by Step Solution
- Step 1: Write the proportion equation
1,380,605,931.68 : 2,071,199,744.28 = 447,855,948.08 : x - Step 2: Convert to fraction form
1,380,605,931.68/2,071,199,744.28 = 447,855,948.08/x - Step 3: Cross multiply
1,380,605,931.68x = 2,071,199,744.28 × 447,855,948.08 - Step 4: Simplify right side
1,380,605,931.68x = 927,599,125,137,572,864 - Step 5: Solve for x
x = 927,599,125,137,572,864/1,380,605,931.68 - Step 6: Final answer
x = 671,878,270.15
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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.