Finding the Fourth Proportional to 390,985,106.08, 586,605,055.92 and 186,486,570.40
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Solution
The fourth proportional to 390,985,106.08, 586,605,055.92 and 186,486,570.40 is: 279,790,619.53
Step by Step Solution
- Step 1: Write the proportion equation
390,985,106.08 : 586,605,055.92 = 186,486,570.40 : x - Step 2: Convert to fraction form
390,985,106.08/586,605,055.92 = 186,486,570.40/x - Step 3: Cross multiply
390,985,106.08x = 586,605,055.92 × 186,486,570.40 - Step 4: Simplify right side
390,985,106.08x = 109,393,965,057,821,008 - Step 5: Solve for x
x = 109,393,965,057,821,008/390,985,106.08 - Step 6: Final answer
x = 279,790,619.53
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.