Finding the Fourth Proportional to 1,248,143,776.97, 1,722,439,340.85 and 675,931,271.21
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Solution
The fourth proportional to 1,248,143,776.97, 1,722,439,340.85 and 675,931,271.21 is: 932,785,657.17
Step by Step Solution
- Step 1: Write the proportion equation
1,248,143,776.97 : 1,722,439,340.85 = 675,931,271.21 : x - Step 2: Convert to fraction form
1,248,143,776.97/1,722,439,340.85 = 675,931,271.21/x - Step 3: Cross multiply
1,248,143,776.97x = 1,722,439,340.85 × 675,931,271.21 - Step 4: Simplify right side
1,248,143,776.97x = 1,164,250,613,243,202,816 - Step 5: Solve for x
x = 1,164,250,613,243,202,816/1,248,143,776.97 - Step 6: Final answer
x = 932,785,657.17
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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.