Finding the Fourth Proportional to 430,386,690.55, 644,907,430.75 and 299,484,722.81
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Solution
The fourth proportional to 430,386,690.55, 644,907,430.75 and 299,484,722.81 is: 448,759,051.75
Step by Step Solution
- Step 1: Write the proportion equation
430,386,690.55 : 644,907,430.75 = 299,484,722.81 : x - Step 2: Convert to fraction form
430,386,690.55/644,907,430.75 = 299,484,722.81/x - Step 3: Cross multiply
430,386,690.55x = 644,907,430.75 × 299,484,722.81 - Step 4: Simplify right side
430,386,690.55x = 193,139,923,136,273,024 - Step 5: Solve for x
x = 193,139,923,136,273,024/430,386,690.55 - Step 6: Final answer
x = 448,759,051.75
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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.