Finding the Fourth Proportional to 779,371,502.76, 1,075,279,612.68 and 531,422,389.80
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Solution
The fourth proportional to 779,371,502.76, 1,075,279,612.68 and 531,422,389.80 is: 733,190,345.62
Step by Step Solution
- Step 1: Write the proportion equation
779,371,502.76 : 1,075,279,612.68 = 531,422,389.80 : x - Step 2: Convert to fraction form
779,371,502.76/1,075,279,612.68 = 531,422,389.80/x - Step 3: Cross multiply
779,371,502.76x = 1,075,279,612.68 × 531,422,389.80 - Step 4: Simplify right side
779,371,502.76x = 571,427,661,473,624,000 - Step 5: Solve for x
x = 571,427,661,473,624,000/779,371,502.76 - Step 6: Final answer
x = 733,190,345.62
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Half scale
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Double scale
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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.