Finding the Fourth Proportional to 742,430.53, 1,024,554.86 and 402,898.78
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Solution
The fourth proportional to 742,430.53, 1,024,554.86 and 402,898.78 is: 556,000.71
Step by Step Solution
- Step 1: Write the proportion equation
742,430.53 : 1,024,554.86 = 402,898.78 : x - Step 2: Convert to fraction form
742,430.53/1,024,554.86 = 402,898.78/x - Step 3: Cross multiply
742,430.53x = 1,024,554.86 × 402,898.78 - Step 4: Simplify right side
742,430.53x = 412,791,903,137.07 - Step 5: Solve for x
x = 412,791,903,137.07/742,430.53 - Step 6: Final answer
x = 556,000.71
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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.