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Finding the Fourth Proportional to 872,164.40, 1,308,289.80 and 452,260.40

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Solution

The fourth proportional to 872,164.40, 1,308,289.80 and 452,260.40 is: 678,413.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,164.40 : 1,308,289.80 = 452,260.40 : x
  2. Step 2: Convert to fraction form
    872,164.40/1,308,289.80 = 452,260.40/x
  3. Step 3: Cross multiply
    872,164.40x = 1,308,289.80 × 452,260.40
  4. Step 4: Simplify right side
    872,164.40x = 591,687,668,263.92
  5. Step 5: Solve for x
    x = 591,687,668,263.92/872,164.40
  6. Step 6: Final answer
    x = 678,413.00

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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.