Home / 813,048.64-1,122,016.04-450,478.16

Finding the Fourth Proportional to 813,048.64, 1,122,016.04 and 450,478.16

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Solution

The fourth proportional to 813,048.64, 1,122,016.04 and 450,478.16 is: 621,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,048.64 : 1,122,016.04 = 450,478.16 : x
  2. Step 2: Convert to fraction form
    813,048.64/1,122,016.04 = 450,478.16/x
  3. Step 3: Cross multiply
    813,048.64x = 1,122,016.04 × 450,478.16
  4. Step 4: Simplify right side
    813,048.64x = 505,443,721,189.69
  5. Step 5: Solve for x
    x = 505,443,721,189.69/813,048.64
  6. Step 6: Final answer
    x = 621,664.80

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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.