Finding the Fourth Proportional to 1,078,861,408.76, 1,488,828,745.86 and 583,824,117.08
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Solution
The fourth proportional to 1,078,861,408.76, 1,488,828,745.86 and 583,824,117.08 is: 805,677,282.53
Step by Step Solution
- Step 1: Write the proportion equation
1,078,861,408.76 : 1,488,828,745.86 = 583,824,117.08 : x - Step 2: Convert to fraction form
1,078,861,408.76/1,488,828,745.86 = 583,824,117.08/x - Step 3: Cross multiply
1,078,861,408.76x = 1,488,828,745.86 × 583,824,117.08 - Step 4: Simplify right side
1,078,861,408.76x = 869,214,128,035,038,208 - Step 5: Solve for x
x = 869,214,128,035,038,208/1,078,861,408.76 - Step 6: Final answer
x = 805,677,282.53
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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.