Finding the Fourth Proportional to 1,317,879,585.26, 1,818,668,838.66 and 723,174,021.74
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Solution
The fourth proportional to 1,317,879,585.26, 1,818,668,838.66 and 723,174,021.74 is: 997,977,412.34
Step by Step Solution
- Step 1: Write the proportion equation
1,317,879,585.26 : 1,818,668,838.66 = 723,174,021.74 : x - Step 2: Convert to fraction form
1,317,879,585.26/1,818,668,838.66 = 723,174,021.74/x - Step 3: Cross multiply
1,317,879,585.26x = 1,818,668,838.66 × 723,174,021.74 - Step 4: Simplify right side
1,317,879,585.26x = 1,315,214,058,266,967,552 - Step 5: Solve for x
x = 1,315,214,058,266,967,552/1,317,879,585.26 - Step 6: Final answer
x = 997,977,412.34
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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.