Home / 450,450.48-621,621.90-280,685.28

Finding the Fourth Proportional to 450,450.48, 621,621.90 and 280,685.28

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Solution

The fourth proportional to 450,450.48, 621,621.90 and 280,685.28 is: 387,345.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,450.48 : 621,621.90 = 280,685.28 : x
  2. Step 2: Convert to fraction form
    450,450.48/621,621.90 = 280,685.28/x
  3. Step 3: Cross multiply
    450,450.48x = 621,621.90 × 280,685.28
  4. Step 4: Simplify right side
    450,450.48x = 174,480,117,055.63
  5. Step 5: Solve for x
    x = 174,480,117,055.63/450,450.48
  6. Step 6: Final answer
    x = 387,345.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.