Finding the Fourth Proportional to 1,125,220,532.25, 1,687,176,557.64 and 425,766,700.82
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Solution
The fourth proportional to 1,125,220,532.25, 1,687,176,557.64 and 425,766,700.82 is: 638,402,496.28
Step by Step Solution
- Step 1: Write the proportion equation
1,125,220,532.25 : 1,687,176,557.64 = 425,766,700.82 : x - Step 2: Convert to fraction form
1,125,220,532.25/1,687,176,557.64 = 425,766,700.82/x - Step 3: Cross multiply
1,125,220,532.25x = 1,687,176,557.64 × 425,766,700.82 - Step 4: Simplify right side
1,125,220,532.25x = 718,343,596,652,637,440 - Step 5: Solve for x
x = 718,343,596,652,637,440/1,125,220,532.25 - Step 6: Final answer
x = 638,402,496.28
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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.