Finding the Fourth Proportional to 926,645,397.84, 1,278,849,514.14 and 524,830,626.36
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Solution
The fourth proportional to 926,645,397.84, 1,278,849,514.14 and 524,830,626.36 is: 724,310,931.77
Step by Step Solution
- Step 1: Write the proportion equation
926,645,397.84 : 1,278,849,514.14 = 524,830,626.36 : x - Step 2: Convert to fraction form
926,645,397.84/1,278,849,514.14 = 524,830,626.36/x - Step 3: Cross multiply
926,645,397.84x = 1,278,849,514.14 × 524,830,626.36 - Step 4: Simplify right side
926,645,397.84x = 671,179,391,526,277,888 - Step 5: Solve for x
x = 671,179,391,526,277,888/926,645,397.84 - Step 6: Final answer
x = 724,310,931.77
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Double scale
Find fourth proportional to 926,645,398.84, 1,278,849,515.52 and 524,830,627.36
Similar ratio
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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.