Finding the Fourth Proportional to 430,620,964.84, 644,986,489.74 and 355,999,011.76
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Solution
The fourth proportional to 430,620,964.84, 644,986,489.74 and 355,999,011.76 is: 533,217,311.03
Step by Step Solution
- Step 1: Write the proportion equation
430,620,964.84 : 644,986,489.74 = 355,999,011.76 : x - Step 2: Convert to fraction form
430,620,964.84/644,986,489.74 = 355,999,011.76/x - Step 3: Cross multiply
430,620,964.84x = 644,986,489.74 × 355,999,011.76 - Step 4: Simplify right side
430,620,964.84x = 229,614,552,945,991,392 - Step 5: Solve for x
x = 229,614,552,945,991,392/430,620,964.84 - Step 6: Final answer
x = 533,217,311.03
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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.