Home / 958,780.68-1,438,720.52-390,056.81

Finding the Fourth Proportional to 958,780.68, 1,438,720.52 and 390,056.81

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Solution

The fourth proportional to 958,780.68, 1,438,720.52 and 390,056.81 is: 585,308.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    958,780.68 : 1,438,720.52 = 390,056.81 : x
  2. Step 2: Convert to fraction form
    958,780.68/1,438,720.52 = 390,056.81/x
  3. Step 3: Cross multiply
    958,780.68x = 1,438,720.52 × 390,056.81
  4. Step 4: Simplify right side
    958,780.68x = 561,182,727,368.86
  5. Step 5: Solve for x
    x = 561,182,727,368.86/958,780.68
  6. Step 6: Final answer
    x = 585,308.76

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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.