Finding the Fourth Proportional to 907,312,988.41, 1,252,043,348.93 and 499,931,053.82
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Solution
The fourth proportional to 907,312,988.41, 1,252,043,348.93 and 499,931,053.82 is: 689,878,089.31
Step by Step Solution
- Step 1: Write the proportion equation
907,312,988.41 : 1,252,043,348.93 = 499,931,053.82 : x - Step 2: Convert to fraction form
907,312,988.41/1,252,043,348.93 = 499,931,053.82/x - Step 3: Cross multiply
907,312,988.41x = 1,252,043,348.93 × 499,931,053.82 - Step 4: Simplify right side
907,312,988.41x = 625,935,350,850,136,960 - Step 5: Solve for x
x = 625,935,350,850,136,960/907,312,988.41 - Step 6: Final answer
x = 689,878,089.31
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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.