Home / 486,024.40-729,036.60-459,780.40

Finding the Fourth Proportional to 486,024.40, 729,036.60 and 459,780.40

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Solution

The fourth proportional to 486,024.40, 729,036.60 and 459,780.40 is: 689,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,024.40 : 729,036.60 = 459,780.40 : x
  2. Step 2: Convert to fraction form
    486,024.40/729,036.60 = 459,780.40/x
  3. Step 3: Cross multiply
    486,024.40x = 729,036.60 × 459,780.40
  4. Step 4: Simplify right side
    486,024.40x = 335,196,739,562.64
  5. Step 5: Solve for x
    x = 335,196,739,562.64/486,024.40
  6. Step 6: Final answer
    x = 689,670.60

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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.