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Finding the Fourth Proportional to 907,555.20, 1,361,332.80 and 655,612.80

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Solution

The fourth proportional to 907,555.20, 1,361,332.80 and 655,612.80 is: 983,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,555.20 : 1,361,332.80 = 655,612.80 : x
  2. Step 2: Convert to fraction form
    907,555.20/1,361,332.80 = 655,612.80/x
  3. Step 3: Cross multiply
    907,555.20x = 1,361,332.80 × 655,612.80
  4. Step 4: Simplify right side
    907,555.20x = 892,507,208,739.84
  5. Step 5: Solve for x
    x = 892,507,208,739.84/907,555.20
  6. Step 6: Final answer
    x = 983,419.20

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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.