Home / 872,409.60-1,307,923.20-478,425.60

Finding the Fourth Proportional to 872,409.60, 1,307,923.20 and 478,425.60

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Solution

The fourth proportional to 872,409.60, 1,307,923.20 and 478,425.60 is: 717,259.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,409.60 : 1,307,923.20 = 478,425.60 : x
  2. Step 2: Convert to fraction form
    872,409.60/1,307,923.20 = 478,425.60/x
  3. Step 3: Cross multiply
    872,409.60x = 1,307,923.20 × 478,425.60
  4. Step 4: Simplify right side
    872,409.60x = 625,743,941,713.92
  5. Step 5: Solve for x
    x = 625,743,941,713.92/872,409.60
  6. Step 6: Final answer
    x = 717,259.35

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1.5x scale

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.