Finding the Fourth Proportional to 708,432.98, 977,637.78 and 402,509.75
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Solution
The fourth proportional to 708,432.98, 977,637.78 and 402,509.75 is: 555,463.60
Step by Step Solution
- Step 1: Write the proportion equation
708,432.98 : 977,637.78 = 402,509.75 : x - Step 2: Convert to fraction form
708,432.98/977,637.78 = 402,509.75/x - Step 3: Cross multiply
708,432.98x = 977,637.78 × 402,509.75 - Step 4: Simplify right side
708,432.98x = 393,508,733,530.17 - Step 5: Solve for x
x = 393,508,733,530.17/708,432.98 - Step 6: Final answer
x = 555,463.60
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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.