Finding the Fourth Proportional to 558,813,890.08, 771,128,421.69 and 307,904,240.75
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Solution
The fourth proportional to 558,813,890.08, 771,128,421.69 and 307,904,240.75 is: 424,888,706.99
Step by Step Solution
- Step 1: Write the proportion equation
558,813,890.08 : 771,128,421.69 = 307,904,240.75 : x - Step 2: Convert to fraction form
558,813,890.08/771,128,421.69 = 307,904,240.75/x - Step 3: Cross multiply
558,813,890.08x = 771,128,421.69 × 307,904,240.75 - Step 4: Simplify right side
558,813,890.08x = 237,433,711,203,464,128 - Step 5: Solve for x
x = 237,433,711,203,464,128/558,813,890.08 - Step 6: Final answer
x = 424,888,706.99
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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.