Finding the Fourth Proportional to 519,013,956.09, 716,236,681.53 and 280,858,972.71
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Solution
The fourth proportional to 519,013,956.09, 716,236,681.53 and 280,858,972.71 is: 387,583,987.35
Step by Step Solution
- Step 1: Write the proportion equation
519,013,956.09 : 716,236,681.53 = 280,858,972.71 : x - Step 2: Convert to fraction form
519,013,956.09/716,236,681.53 = 280,858,972.71/x - Step 3: Cross multiply
519,013,956.09x = 716,236,681.53 × 280,858,972.71 - Step 4: Simplify right side
519,013,956.09x = 201,161,498,591,735,200 - Step 5: Solve for x
x = 201,161,498,591,735,200/519,013,956.09 - Step 6: Final answer
x = 387,583,987.35
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1.5x scale
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.