Finding the Fourth Proportional to 390,889,423.41, 586,333,639.32 and 99,756,552.70
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Solution
The fourth proportional to 390,889,423.41, 586,333,639.32 and 99,756,552.70 is: 149,634,702.52
Step by Step Solution
- Step 1: Write the proportion equation
390,889,423.41 : 586,333,639.32 = 99,756,552.70 : x - Step 2: Convert to fraction form
390,889,423.41/586,333,639.32 = 99,756,552.70/x - Step 3: Cross multiply
390,889,423.41x = 586,333,639.32 × 99,756,552.70 - Step 4: Simplify right side
390,889,423.41x = 58,490,622,590,608,376 - Step 5: Solve for x
x = 58,490,622,590,608,376/390,889,423.41 - Step 6: Final answer
x = 149,634,702.52
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.