Finding the Fourth Proportional to 708,156,371.35, 977,256,733.84 and 390,609,495.96
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Solution
The fourth proportional to 708,156,371.35, 977,256,733.84 and 390,609,495.96 is: 539,041,623.68
Step by Step Solution
- Step 1: Write the proportion equation
708,156,371.35 : 977,256,733.84 = 390,609,495.96 : x - Step 2: Convert to fraction form
708,156,371.35/977,256,733.84 = 390,609,495.96/x - Step 3: Cross multiply
708,156,371.35x = 977,256,733.84 × 390,609,495.96 - Step 4: Simplify right side
708,156,371.35x = 381,725,760,228,758,272 - Step 5: Solve for x
x = 381,725,760,228,758,272/708,156,371.35 - Step 6: Final answer
x = 539,041,623.68
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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.