Home / 780,720.16-1,077,395.78-436,568.58

Finding the Fourth Proportional to 780,720.16, 1,077,395.78 and 436,568.58

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Solution

The fourth proportional to 780,720.16, 1,077,395.78 and 436,568.58 is: 602,465.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,720.16 : 1,077,395.78 = 436,568.58 : x
  2. Step 2: Convert to fraction form
    780,720.16/1,077,395.78 = 436,568.58/x
  3. Step 3: Cross multiply
    780,720.16x = 1,077,395.78 × 436,568.58
  4. Step 4: Simplify right side
    780,720.16x = 470,357,145,772.59
  5. Step 5: Solve for x
    x = 470,357,145,772.59/780,720.16
  6. Step 6: Final answer
    x = 602,465.74

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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.