Finding the Fourth Proportional to 771,616,649.84, 1,064,838,439.68 and 419,195,162.48
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Solution
The fourth proportional to 771,616,649.84, 1,064,838,439.68 and 419,195,162.48 is: 578,493,378.58
Step by Step Solution
- Step 1: Write the proportion equation
771,616,649.84 : 1,064,838,439.68 = 419,195,162.48 : x - Step 2: Convert to fraction form
771,616,649.84/1,064,838,439.68 = 419,195,162.48/x - Step 3: Cross multiply
771,616,649.84x = 1,064,838,439.68 × 419,195,162.48 - Step 4: Simplify right side
771,616,649.84x = 446,375,122,736,607,296 - Step 5: Solve for x
x = 446,375,122,736,607,296/771,616,649.84 - Step 6: Final answer
x = 578,493,378.58
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.