Finding the Fourth Proportional to 811,977,888.65, 1,120,337,430.20 and 459,553,869.03
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Solution
The fourth proportional to 811,977,888.65, 1,120,337,430.20 and 459,553,869.03 is: 634,075,641.55
Step by Step Solution
- Step 1: Write the proportion equation
811,977,888.65 : 1,120,337,430.20 = 459,553,869.03 : x - Step 2: Convert to fraction form
811,977,888.65/1,120,337,430.20 = 459,553,869.03/x - Step 3: Cross multiply
811,977,888.65x = 1,120,337,430.20 × 459,553,869.03 - Step 4: Simplify right side
811,977,888.65x = 514,855,400,667,537,536 - Step 5: Solve for x
x = 514,855,400,667,537,536/811,977,888.65 - Step 6: Final answer
x = 634,075,641.55
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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.