Finding the Fourth Proportional to 787,386,564.32, 1,181,080,261.20 and 205,119,269.60
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Solution
The fourth proportional to 787,386,564.32, 1,181,080,261.20 and 205,119,269.60 is: 307,679,012.44
Step by Step Solution
- Step 1: Write the proportion equation
787,386,564.32 : 1,181,080,261.20 = 205,119,269.60 : x - Step 2: Convert to fraction form
787,386,564.32/1,181,080,261.20 = 205,119,269.60/x - Step 3: Cross multiply
787,386,564.32x = 1,181,080,261.20 × 205,119,269.60 - Step 4: Simplify right side
787,386,564.32x = 242,262,320,516,321,216 - Step 5: Solve for x
x = 242,262,320,516,321,216/787,386,564.32 - Step 6: Final answer
x = 307,679,012.44
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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.