Finding the Fourth Proportional to 811,977,886.15, 1,120,337,426.75 and 459,553,866.53
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Solution
The fourth proportional to 811,977,886.15, 1,120,337,426.75 and 459,553,866.53 is: 634,075,638.09
Step by Step Solution
- Step 1: Write the proportion equation
811,977,886.15 : 1,120,337,426.75 = 459,553,866.53 : x - Step 2: Convert to fraction form
811,977,886.15/1,120,337,426.75 = 459,553,866.53/x - Step 3: Cross multiply
811,977,886.15x = 1,120,337,426.75 × 459,553,866.53 - Step 4: Simplify right side
811,977,886.15x = 514,855,396,275,631,424 - Step 5: Solve for x
x = 514,855,396,275,631,424/811,977,886.15 - Step 6: Final answer
x = 634,075,638.09
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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.