Finding the Fourth Proportional to 752,408,511.90, 1,038,326,151.94 and 417,880,973.70
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Solution
The fourth proportional to 752,408,511.90, 1,038,326,151.94 and 417,880,973.70 is: 576,677,079.71
Step by Step Solution
- Step 1: Write the proportion equation
752,408,511.90 : 1,038,326,151.94 = 417,880,973.70 : x - Step 2: Convert to fraction form
752,408,511.90/1,038,326,151.94 = 417,880,973.70/x - Step 3: Cross multiply
752,408,511.90x = 1,038,326,151.94 × 417,880,973.70 - Step 4: Simplify right side
752,408,511.90x = 433,896,743,390,861,376 - Step 5: Solve for x
x = 433,896,743,390,861,376/752,408,511.90 - Step 6: Final answer
x = 576,677,079.71
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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.