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Finding the Fourth Proportional to 522,045.16, 720,358.12 and 318,022.08

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Solution

The fourth proportional to 522,045.16, 720,358.12 and 318,022.08 is: 438,831.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,045.16 : 720,358.12 = 318,022.08 : x
  2. Step 2: Convert to fraction form
    522,045.16/720,358.12 = 318,022.08/x
  3. Step 3: Cross multiply
    522,045.16x = 720,358.12 × 318,022.08
  4. Step 4: Simplify right side
    522,045.16x = 229,089,787,667.29
  5. Step 5: Solve for x
    x = 229,089,787,667.29/522,045.16
  6. Step 6: Final answer
    x = 438,831.36

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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.