Home / 872,400.80-1,308,601.20-662,448.80

Finding the Fourth Proportional to 872,400.80, 1,308,601.20 and 662,448.80

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Solution

The fourth proportional to 872,400.80, 1,308,601.20 and 662,448.80 is: 993,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,400.80 : 1,308,601.20 = 662,448.80 : x
  2. Step 2: Convert to fraction form
    872,400.80/1,308,601.20 = 662,448.80/x
  3. Step 3: Cross multiply
    872,400.80x = 1,308,601.20 × 662,448.80
  4. Step 4: Simplify right side
    872,400.80x = 866,881,294,618.56
  5. Step 5: Solve for x
    x = 866,881,294,618.56/872,400.80
  6. Step 6: Final answer
    x = 993,673.20

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Double scale
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Similar ratio
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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.