Finding the Fourth Proportional to 742,641,485.88, 1,024,872,908.64 and 445,332,132.84
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Solution
The fourth proportional to 742,641,485.88, 1,024,872,908.64 and 445,332,132.84 is: 614,574,928.78
Step by Step Solution
- Step 1: Write the proportion equation
742,641,485.88 : 1,024,872,908.64 = 445,332,132.84 : x - Step 2: Convert to fraction form
742,641,485.88/1,024,872,908.64 = 445,332,132.84/x - Step 3: Cross multiply
742,641,485.88x = 1,024,872,908.64 × 445,332,132.84 - Step 4: Simplify right side
742,641,485.88x = 456,408,838,294,585,600 - Step 5: Solve for x
x = 456,408,838,294,585,600/742,641,485.88 - Step 6: Final answer
x = 614,574,928.78
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Double scale
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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.