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Finding the Fourth Proportional to 581,606.40, 872,409.60 and 328,627.20

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Solution

The fourth proportional to 581,606.40, 872,409.60 and 328,627.20 is: 492,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,606.40 : 872,409.60 = 328,627.20 : x
  2. Step 2: Convert to fraction form
    581,606.40/872,409.60 = 328,627.20/x
  3. Step 3: Cross multiply
    581,606.40x = 872,409.60 × 328,627.20
  4. Step 4: Simplify right side
    581,606.40x = 286,697,524,101.12
  5. Step 5: Solve for x
    x = 286,697,524,101.12/581,606.40
  6. Step 6: Final answer
    x = 492,940.80

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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.