Finding the Fourth Proportional to 1,237,103,085.02, 1,707,209,006.44 and 728,487,988.70
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Solution
The fourth proportional to 1,237,103,085.02, 1,707,209,006.44 and 728,487,988.70 is: 1,005,317,398.72
Step by Step Solution
- Step 1: Write the proportion equation
1,237,103,085.02 : 1,707,209,006.44 = 728,487,988.70 : x - Step 2: Convert to fraction form
1,237,103,085.02/1,707,209,006.44 = 728,487,988.70/x - Step 3: Cross multiply
1,237,103,085.02x = 1,707,209,006.44 × 728,487,988.70 - Step 4: Simplify right side
1,237,103,085.02x = 1,243,681,255,381,643,776 - Step 5: Solve for x
x = 1,243,681,255,381,643,776/1,237,103,085.02 - Step 6: Final answer
x = 1,005,317,398.72
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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.