Home / 474,804.20-712,206.30-428,148.20

Finding the Fourth Proportional to 474,804.20, 712,206.30 and 428,148.20

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Solution

The fourth proportional to 474,804.20, 712,206.30 and 428,148.20 is: 642,222.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,804.20 : 712,206.30 = 428,148.20 : x
  2. Step 2: Convert to fraction form
    474,804.20/712,206.30 = 428,148.20/x
  3. Step 3: Cross multiply
    474,804.20x = 712,206.30 × 428,148.20
  4. Step 4: Simplify right side
    474,804.20x = 304,929,845,373.66
  5. Step 5: Solve for x
    x = 304,929,845,373.66/474,804.20
  6. Step 6: Final answer
    x = 642,222.30

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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.