Finding the Fourth Proportional to 478,420,652.99, 660,220,946.04 and 258,404,078.99
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Solution
The fourth proportional to 478,420,652.99, 660,220,946.04 and 258,404,078.99 is: 356,597,869.31
Step by Step Solution
- Step 1: Write the proportion equation
478,420,652.99 : 660,220,946.04 = 258,404,078.99 : x - Step 2: Convert to fraction form
478,420,652.99/660,220,946.04 = 258,404,078.99/x - Step 3: Cross multiply
478,420,652.99x = 660,220,946.04 × 258,404,078.99 - Step 4: Simplify right side
478,420,652.99x = 170,603,785,488,071,584 - Step 5: Solve for x
x = 170,603,785,488,071,584/478,420,652.99 - Step 6: Final answer
x = 356,597,869.31
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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.