Home / 528,831.28-729,815.16-302,515.12

Finding the Fourth Proportional to 528,831.28, 729,815.16 and 302,515.12

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Solution

The fourth proportional to 528,831.28, 729,815.16 and 302,515.12 is: 417,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,831.28 : 729,815.16 = 302,515.12 : x
  2. Step 2: Convert to fraction form
    528,831.28/729,815.16 = 302,515.12/x
  3. Step 3: Cross multiply
    528,831.28x = 729,815.16 × 302,515.12
  4. Step 4: Simplify right side
    528,831.28x = 220,780,120,705.22
  5. Step 5: Solve for x
    x = 220,780,120,705.22/528,831.28
  6. Step 6: Final answer
    x = 417,486.88

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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.