Finding the Fourth Proportional to 1,772,935,905.70, 2,659,403,858.55 and 854,605,857.70
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Solution
The fourth proportional to 1,772,935,905.70, 2,659,403,858.55 and 854,605,857.70 is: 1,281,908,786.55
Step by Step Solution
- Step 1: Write the proportion equation
1,772,935,905.70 : 2,659,403,858.55 = 854,605,857.70 : x - Step 2: Convert to fraction form
1,772,935,905.70/2,659,403,858.55 = 854,605,857.70/x - Step 3: Cross multiply
1,772,935,905.70x = 2,659,403,858.55 × 854,605,857.70 - Step 4: Simplify right side
1,772,935,905.70x = 2,272,742,115,506,812,416 - Step 5: Solve for x
x = 2,272,742,115,506,812,416/1,772,935,905.70 - Step 6: Final answer
x = 1,281,908,786.55
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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.