Home / 785,608.26-1,178,928.99-430,871.28

Finding the Fourth Proportional to 785,608.26, 1,178,928.99 and 430,871.28

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Solution

The fourth proportional to 785,608.26, 1,178,928.99 and 430,871.28 is: 646,590.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,608.26 : 1,178,928.99 = 430,871.28 : x
  2. Step 2: Convert to fraction form
    785,608.26/1,178,928.99 = 430,871.28/x
  3. Step 3: Cross multiply
    785,608.26x = 1,178,928.99 × 430,871.28
  4. Step 4: Simplify right side
    785,608.26x = 507,966,642,950.41
  5. Step 5: Solve for x
    x = 507,966,642,950.41/785,608.26
  6. Step 6: Final answer
    x = 646,590.25

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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.