Finding the Fourth Proportional to 686,312,566.20, 1,029,605,842.95 and 358,935,462.36
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Solution
The fourth proportional to 686,312,566.20, 1,029,605,842.95 and 358,935,462.36 is: 538,474,840.02
Step by Step Solution
- Step 1: Write the proportion equation
686,312,566.20 : 1,029,605,842.95 = 358,935,462.36 : x - Step 2: Convert to fraction form
686,312,566.20/1,029,605,842.95 = 358,935,462.36/x - Step 3: Cross multiply
686,312,566.20x = 1,029,605,842.95 × 358,935,462.36 - Step 4: Simplify right side
686,312,566.20x = 369,562,049,287,815,808 - Step 5: Solve for x
x = 369,562,049,287,815,808/686,312,566.20 - Step 6: Final answer
x = 538,474,840.02
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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.