Finding the Fourth Proportional to 1,432,913.69, 1,977,420.80 and 788,320.05
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Solution
The fourth proportional to 1,432,913.69, 1,977,420.80 and 788,320.05 is: 1,087,881.62
Step by Step Solution
- Step 1: Write the proportion equation
1,432,913.69 : 1,977,420.80 = 788,320.05 : x - Step 2: Convert to fraction form
1,432,913.69/1,977,420.80 = 788,320.05/x - Step 3: Cross multiply
1,432,913.69x = 1,977,420.80 × 788,320.05 - Step 4: Simplify right side
1,432,913.69x = 1,558,840,459,985.44 - Step 5: Solve for x
x = 1,558,840,459,985.44/1,432,913.69 - Step 6: Final answer
x = 1,087,881.62
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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.