Finding the Fourth Proportional to 870,980,493.60, 1,306,442,746.80 and 288,741,607.20
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Solution
The fourth proportional to 870,980,493.60, 1,306,442,746.80 and 288,741,607.20 is: 433,103,130.55
Step by Step Solution
- Step 1: Write the proportion equation
870,980,493.60 : 1,306,442,746.80 = 288,741,607.20 : x - Step 2: Convert to fraction form
870,980,493.60/1,306,442,746.80 = 288,741,607.20/x - Step 3: Cross multiply
870,980,493.60x = 1,306,442,746.80 × 288,741,607.20 - Step 4: Simplify right side
870,980,493.60x = 377,224,378,425,814,656 - Step 5: Solve for x
x = 377,224,378,425,814,656/870,980,493.60 - Step 6: Final answer
x = 433,103,130.55
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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.