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Finding the Fourth Proportional to 657,855.72, 907,790.22 and 371,404.08

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Solution

The fourth proportional to 657,855.72, 907,790.22 and 371,404.08 is: 512,509.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,855.72 : 907,790.22 = 371,404.08 : x
  2. Step 2: Convert to fraction form
    657,855.72/907,790.22 = 371,404.08/x
  3. Step 3: Cross multiply
    657,855.72x = 907,790.22 × 371,404.08
  4. Step 4: Simplify right side
    657,855.72x = 337,156,991,492.10
  5. Step 5: Solve for x
    x = 337,156,991,492.10/657,855.72
  6. Step 6: Final answer
    x = 512,509.02

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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.