Finding the Fourth Proportional to 917,887,220.80, 1,376,830,831.20 and 736,488,692.80
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Solution
The fourth proportional to 917,887,220.80, 1,376,830,831.20 and 736,488,692.80 is: 1,104,733,039.20
Step by Step Solution
- Step 1: Write the proportion equation
917,887,220.80 : 1,376,830,831.20 = 736,488,692.80 : x - Step 2: Convert to fraction form
917,887,220.80/1,376,830,831.20 = 736,488,692.80/x - Step 3: Cross multiply
917,887,220.80x = 1,376,830,831.20 × 736,488,692.80 - Step 4: Simplify right side
917,887,220.80x = 1,014,020,339,077,225,472 - Step 5: Solve for x
x = 1,014,020,339,077,225,472/917,887,220.80 - Step 6: Final answer
x = 1,104,733,039.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.