Finding the Fourth Proportional to 687,437,772.99, 1,031,128,695.05 and 169,855,179.63
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Solution
The fourth proportional to 687,437,772.99, 1,031,128,695.05 and 169,855,179.63 is: 254,775,859.87
Step by Step Solution
- Step 1: Write the proportion equation
687,437,772.99 : 1,031,128,695.05 = 169,855,179.63 : x - Step 2: Convert to fraction form
687,437,772.99/1,031,128,695.05 = 169,855,179.63/x - Step 3: Cross multiply
687,437,772.99x = 1,031,128,695.05 × 169,855,179.63 - Step 4: Simplify right side
687,437,772.99x = 175,142,549,718,515,968 - Step 5: Solve for x
x = 175,142,549,718,515,968/687,437,772.99 - Step 6: Final answer
x = 254,775,859.87
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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.