Finding the Fourth Proportional to 875,196,959.40, 1,207,757,592.63 and 478,716,480.81
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Solution
The fourth proportional to 875,196,959.40, 1,207,757,592.63 and 478,716,480.81 is: 660,620,970.18
Step by Step Solution
- Step 1: Write the proportion equation
875,196,959.40 : 1,207,757,592.63 = 478,716,480.81 : x - Step 2: Convert to fraction form
875,196,959.40/1,207,757,592.63 = 478,716,480.81/x - Step 3: Cross multiply
875,196,959.40x = 1,207,757,592.63 × 478,716,480.81 - Step 4: Simplify right side
875,196,959.40x = 578,173,464,415,391,232 - Step 5: Solve for x
x = 578,173,464,415,391,232/875,196,959.40 - Step 6: Final answer
x = 660,620,970.18
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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.