Home / 958,785.18-1,438,727.28-390,061.32

Finding the Fourth Proportional to 958,785.18, 1,438,727.28 and 390,061.32

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Solution

The fourth proportional to 958,785.18, 1,438,727.28 and 390,061.32 is: 585,315.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    958,785.18 : 1,438,727.28 = 390,061.32 : x
  2. Step 2: Convert to fraction form
    958,785.18/1,438,727.28 = 390,061.32/x
  3. Step 3: Cross multiply
    958,785.18x = 1,438,727.28 × 390,061.32
  4. Step 4: Simplify right side
    958,785.18x = 561,191,861,956.81
  5. Step 5: Solve for x
    x = 561,191,861,956.81/958,785.18
  6. Step 6: Final answer
    x = 585,315.54

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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.