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Finding the Fourth Proportional to 524,656.80, 724,005 and 309,866.40

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Solution

The fourth proportional to 524,656.80, 724,005 and 309,866.40 is: 427,603.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,656.80 : 724,005 = 309,866.40 : x
  2. Step 2: Convert to fraction form
    524,656.80/724,005 = 309,866.40/x
  3. Step 3: Cross multiply
    524,656.80x = 724,005 × 309,866.40
  4. Step 4: Simplify right side
    524,656.80x = 224,344,822,932.00
  5. Step 5: Solve for x
    x = 224,344,822,932.00/524,656.80
  6. Step 6: Final answer
    x = 427,603.00

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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.