Finding the Fourth Proportional to 716,949,790.35, 989,128,261.92 and 434,488,462.05
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Solution
The fourth proportional to 716,949,790.35, 989,128,261.92 and 434,488,462.05 is: 599,435,027.50
Step by Step Solution
- Step 1: Write the proportion equation
716,949,790.35 : 989,128,261.92 = 434,488,462.05 : x - Step 2: Convert to fraction form
716,949,790.35/989,128,261.92 = 434,488,462.05/x - Step 3: Cross multiply
716,949,790.35x = 989,128,261.92 × 434,488,462.05 - Step 4: Simplify right side
716,949,790.35x = 429,764,817,291,810,368 - Step 5: Solve for x
x = 429,764,817,291,810,368/716,949,790.35 - Step 6: Final answer
x = 599,435,027.50
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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.