Finding the Fourth Proportional to 570,421.49, 787,190.93 and 312,294.08
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Solution
The fourth proportional to 570,421.49, 787,190.93 and 312,294.08 is: 430,970.91
Step by Step Solution
- Step 1: Write the proportion equation
570,421.49 : 787,190.93 = 312,294.08 : x - Step 2: Convert to fraction form
570,421.49/787,190.93 = 312,294.08/x - Step 3: Cross multiply
570,421.49x = 787,190.93 × 312,294.08 - Step 4: Simplify right side
570,421.49x = 245,835,064,113.48 - Step 5: Solve for x
x = 245,835,064,113.48/570,421.49 - Step 6: Final answer
x = 430,970.91
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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.