Finding the Fourth Proportional to 815,967,239.40, 1,125,896,926.68 and 458,687,424.96
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Solution
The fourth proportional to 815,967,239.40, 1,125,896,926.68 and 458,687,424.96 is: 632,911,147.82
Step by Step Solution
- Step 1: Write the proportion equation
815,967,239.40 : 1,125,896,926.68 = 458,687,424.96 : x - Step 2: Convert to fraction form
815,967,239.40/1,125,896,926.68 = 458,687,424.96/x - Step 3: Cross multiply
815,967,239.40x = 1,125,896,926.68 × 458,687,424.96 - Step 4: Simplify right side
815,967,239.40x = 516,434,762,069,227,136 - Step 5: Solve for x
x = 516,434,762,069,227,136/815,967,239.40 - Step 6: Final answer
x = 632,911,147.82
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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.