Home / 770,818.20-1,154,672.10-438,005.40

Finding the Fourth Proportional to 770,818.20, 1,154,672.10 and 438,005.40

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Solution

The fourth proportional to 770,818.20, 1,154,672.10 and 438,005.40 is: 656,124.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,818.20 : 1,154,672.10 = 438,005.40 : x
  2. Step 2: Convert to fraction form
    770,818.20/1,154,672.10 = 438,005.40/x
  3. Step 3: Cross multiply
    770,818.20x = 1,154,672.10 × 438,005.40
  4. Step 4: Simplify right side
    770,818.20x = 505,752,615,029.34
  5. Step 5: Solve for x
    x = 505,752,615,029.34/770,818.20
  6. Step 6: Final answer
    x = 656,124.38

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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.