Finding the Fourth Proportional to 887,124,936.20, 1,330,687,404.30 and 657,542,424.20
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Solution
The fourth proportional to 887,124,936.20, 1,330,687,404.30 and 657,542,424.20 is: 986,313,636.30
Step by Step Solution
- Step 1: Write the proportion equation
887,124,936.20 : 1,330,687,404.30 = 657,542,424.20 : x - Step 2: Convert to fraction form
887,124,936.20/1,330,687,404.30 = 657,542,424.20/x - Step 3: Cross multiply
887,124,936.20x = 1,330,687,404.30 × 657,542,424.20 - Step 4: Simplify right side
887,124,936.20x = 874,983,421,675,827,584 - Step 5: Solve for x
x = 874,983,421,675,827,584/887,124,936.20 - Step 6: Final answer
x = 986,313,636.30
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1.5x scale
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.