Home / 935,478.20-1,403,630.40-455,439.80

Finding the Fourth Proportional to 935,478.20, 1,403,630.40 and 455,439.80

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Solution

The fourth proportional to 935,478.20, 1,403,630.40 and 455,439.80 is: 683,360.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,478.20 : 1,403,630.40 = 455,439.80 : x
  2. Step 2: Convert to fraction form
    935,478.20/1,403,630.40 = 455,439.80/x
  3. Step 3: Cross multiply
    935,478.20x = 1,403,630.40 × 455,439.80
  4. Step 4: Simplify right side
    935,478.20x = 639,269,148,649.92
  5. Step 5: Solve for x
    x = 639,269,148,649.92/935,478.20
  6. Step 6: Final answer
    x = 683,360.82

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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.