Finding the Fourth Proportional to 7,112,506,538.08, 9,815,251,354.91 and 3,897,494,921.84
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Solution
The fourth proportional to 7,112,506,538.08, 9,815,251,354.91 and 3,897,494,921.84 is: 5,378,538,790.45
Step by Step Solution
- Step 1: Write the proportion equation
7,112,506,538.08 : 9,815,251,354.91 = 3,897,494,921.84 : x - Step 2: Convert to fraction form
7,112,506,538.08/9,815,251,354.91 = 3,897,494,921.84/x - Step 3: Cross multiply
7,112,506,538.08x = 9,815,251,354.91 × 3,897,494,921.84 - Step 4: Simplify right side
7,112,506,538.08x = 38,254,892,312,365,547,520 - Step 5: Solve for x
x = 38,254,892,312,365,547,520/7,112,506,538.08 - Step 6: Final answer
x = 5,378,538,790.45
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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.