Finding the Fourth Proportional to 528,305,070.49, 729,128,257.59 and 319,462,707.80
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Solution
The fourth proportional to 528,305,070.49, 729,128,257.59 and 319,462,707.80 is: 440,899,208.65
Step by Step Solution
- Step 1: Write the proportion equation
528,305,070.49 : 729,128,257.59 = 319,462,707.80 : x - Step 2: Convert to fraction form
528,305,070.49/729,128,257.59 = 319,462,707.80/x - Step 3: Cross multiply
528,305,070.49x = 729,128,257.59 × 319,462,707.80 - Step 4: Simplify right side
528,305,070.49x = 232,929,287,503,197,312 - Step 5: Solve for x
x = 232,929,287,503,197,312/528,305,070.49 - Step 6: Final answer
x = 440,899,208.65
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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.