Home / 919,272.51-1,378,909.17-288,235.53

Finding the Fourth Proportional to 919,272.51, 1,378,909.17 and 288,235.53

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Solution

The fourth proportional to 919,272.51, 1,378,909.17 and 288,235.53 is: 432,353.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,272.51 : 1,378,909.17 = 288,235.53 : x
  2. Step 2: Convert to fraction form
    919,272.51/1,378,909.17 = 288,235.53/x
  3. Step 3: Cross multiply
    919,272.51x = 1,378,909.17 × 288,235.53
  4. Step 4: Simplify right side
    919,272.51x = 397,450,615,436.81
  5. Step 5: Solve for x
    x = 397,450,615,436.81/919,272.51
  6. Step 6: Final answer
    x = 432,353.42

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Double scale
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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.