Finding the Fourth Proportional to 549,032.68, 756,981.84 and 420,130.90
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Solution
The fourth proportional to 549,032.68, 756,981.84 and 420,130.90 is: 579,257.80
Step by Step Solution
- Step 1: Write the proportion equation
549,032.68 : 756,981.84 = 420,130.90 : x - Step 2: Convert to fraction form
549,032.68/756,981.84 = 420,130.90/x - Step 3: Cross multiply
549,032.68x = 756,981.84 × 420,130.90 - Step 4: Simplify right side
549,032.68x = 318,031,461,722.86 - Step 5: Solve for x
x = 318,031,461,722.86/549,032.68 - Step 6: Final answer
x = 579,257.80
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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.