Finding the Fourth Proportional to 520,032,153.28, 717,689,772.47 and 285,128,214.65
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Solution
The fourth proportional to 520,032,153.28, 717,689,772.47 and 285,128,214.65 is: 393,501,829.08
Step by Step Solution
- Step 1: Write the proportion equation
520,032,153.28 : 717,689,772.47 = 285,128,214.65 : x - Step 2: Convert to fraction form
520,032,153.28/717,689,772.47 = 285,128,214.65/x - Step 3: Cross multiply
520,032,153.28x = 717,689,772.47 × 285,128,214.65 - Step 4: Simplify right side
520,032,153.28x = 204,633,603,496,935,808 - Step 5: Solve for x
x = 204,633,603,496,935,808/520,032,153.28 - Step 6: Final answer
x = 393,501,829.08
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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.