Finding the Fourth Proportional to 722,088,206.20, 996,485,701.98 and 392,063,345.20
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Solution
The fourth proportional to 722,088,206.20, 996,485,701.98 and 392,063,345.20 is: 541,049,575.95
Step by Step Solution
- Step 1: Write the proportion equation
722,088,206.20 : 996,485,701.98 = 392,063,345.20 : x - Step 2: Convert to fraction form
722,088,206.20/996,485,701.98 = 392,063,345.20/x - Step 3: Cross multiply
722,088,206.20x = 996,485,701.98 × 392,063,345.20 - Step 4: Simplify right side
722,088,206.20x = 390,685,517,762,249,088 - Step 5: Solve for x
x = 390,685,517,762,249,088/722,088,206.20 - Step 6: Final answer
x = 541,049,575.95
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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.