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Finding the Fourth Proportional to 657,024.80, 985,537.20 and 515,307.20

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Solution

The fourth proportional to 657,024.80, 985,537.20 and 515,307.20 is: 772,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,024.80 : 985,537.20 = 515,307.20 : x
  2. Step 2: Convert to fraction form
    657,024.80/985,537.20 = 515,307.20/x
  3. Step 3: Cross multiply
    657,024.80x = 985,537.20 × 515,307.20
  4. Step 4: Simplify right side
    657,024.80x = 507,854,415,027.84
  5. Step 5: Solve for x
    x = 507,854,415,027.84/657,024.80
  6. Step 6: Final answer
    x = 772,960.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.