Finding the Fourth Proportional to 661,564,855.68, 913,012,875.84 and 379,333,558.08
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Solution
The fourth proportional to 661,564,855.68, 913,012,875.84 and 379,333,558.08 is: 523,510,914.75
Step by Step Solution
- Step 1: Write the proportion equation
661,564,855.68 : 913,012,875.84 = 379,333,558.08 : x - Step 2: Convert to fraction form
661,564,855.68/913,012,875.84 = 379,333,558.08/x - Step 3: Cross multiply
661,564,855.68x = 913,012,875.84 × 379,333,558.08 - Step 4: Simplify right side
661,564,855.68x = 346,336,422,765,240,448 - Step 5: Solve for x
x = 346,336,422,765,240,448/661,564,855.68 - Step 6: Final answer
x = 523,510,914.75
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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.