Finding the Fourth Proportional to 489,931,355.40, 734,881,286.70 and 162,421,981.80
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Solution
The fourth proportional to 489,931,355.40, 734,881,286.70 and 162,421,981.80 is: 243,627,752.46
Step by Step Solution
- Step 1: Write the proportion equation
489,931,355.40 : 734,881,286.70 = 162,421,981.80 : x - Step 2: Convert to fraction form
489,931,355.40/734,881,286.70 = 162,421,981.80/x - Step 3: Cross multiply
489,931,355.40x = 734,881,286.70 × 162,421,981.80 - Step 4: Simplify right side
489,931,355.40x = 119,360,874,973,548,000 - Step 5: Solve for x
x = 119,360,874,973,548,000/489,931,355.40 - Step 6: Final answer
x = 243,627,752.46
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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.