Finding the Fourth Proportional to 1,492,564,985.20, 2,238,847,477.80 and 1,320,378,101.20
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Solution
The fourth proportional to 1,492,564,985.20, 2,238,847,477.80 and 1,320,378,101.20 is: 1,980,567,151.80
Step by Step Solution
- Step 1: Write the proportion equation
1,492,564,985.20 : 2,238,847,477.80 = 1,320,378,101.20 : x - Step 2: Convert to fraction form
1,492,564,985.20/2,238,847,477.80 = 1,320,378,101.20/x - Step 3: Cross multiply
1,492,564,985.20x = 2,238,847,477.80 × 1,320,378,101.20 - Step 4: Simplify right side
1,492,564,985.20x = 2,956,125,181,613,973,504 - Step 5: Solve for x
x = 2,956,125,181,613,973,504/1,492,564,985.20 - Step 6: Final answer
x = 1,980,567,151.80
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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.