Finding the Fourth Proportional to 420,171,257.68, 579,933,081.48 and 246,386,988.88
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Solution
The fourth proportional to 420,171,257.68, 579,933,081.48 and 246,386,988.88 is: 340,070,776.11
Step by Step Solution
- Step 1: Write the proportion equation
420,171,257.68 : 579,933,081.48 = 246,386,988.88 : x - Step 2: Convert to fraction form
420,171,257.68/579,933,081.48 = 246,386,988.88/x - Step 3: Cross multiply
420,171,257.68x = 579,933,081.48 × 246,386,988.88 - Step 4: Simplify right side
420,171,257.68x = 142,887,965,697,756,896 - Step 5: Solve for x
x = 142,887,965,697,756,896/420,171,257.68 - Step 6: Final answer
x = 340,070,776.11
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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.