Finding the Fourth Proportional to 687,437,775.48, 1,031,128,698.80 and 169,855,182.12
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Solution
The fourth proportional to 687,437,775.48, 1,031,128,698.80 and 169,855,182.12 is: 254,775,863.61
Step by Step Solution
- Step 1: Write the proportion equation
687,437,775.48 : 1,031,128,698.80 = 169,855,182.12 : x - Step 2: Convert to fraction form
687,437,775.48/1,031,128,698.80 = 169,855,182.12/x - Step 3: Cross multiply
687,437,775.48x = 1,031,128,698.80 × 169,855,182.12 - Step 4: Simplify right side
687,437,775.48x = 175,142,552,923,832,608 - Step 5: Solve for x
x = 175,142,552,923,832,608/687,437,775.48 - Step 6: Final answer
x = 254,775,863.61
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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.