Finding the Fourth Proportional to 1,358,580,987.18, 1,873,680,141.20 and 935,869,272.84
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Solution
The fourth proportional to 1,358,580,987.18, 1,873,680,141.20 and 935,869,272.84 is: 1,290,699,404.62
Step by Step Solution
- Step 1: Write the proportion equation
1,358,580,987.18 : 1,873,680,141.20 = 935,869,272.84 : x - Step 2: Convert to fraction form
1,358,580,987.18/1,873,680,141.20 = 935,869,272.84/x - Step 3: Cross multiply
1,358,580,987.18x = 1,873,680,141.20 × 935,869,272.84 - Step 4: Simplify right side
1,358,580,987.18x = 1,753,519,671,274,913,280 - Step 5: Solve for x
x = 1,753,519,671,274,913,280/1,358,580,987.18 - Step 6: Final answer
x = 1,290,699,404.62
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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.