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Finding the Fourth Proportional to 638,642.40, 957,963.60 and 587,032.80

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Solution

The fourth proportional to 638,642.40, 957,963.60 and 587,032.80 is: 880,549.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,642.40 : 957,963.60 = 587,032.80 : x
  2. Step 2: Convert to fraction form
    638,642.40/957,963.60 = 587,032.80/x
  3. Step 3: Cross multiply
    638,642.40x = 957,963.60 × 587,032.80
  4. Step 4: Simplify right side
    638,642.40x = 562,356,054,406.08
  5. Step 5: Solve for x
    x = 562,356,054,406.08/638,642.40
  6. Step 6: Final answer
    x = 880,549.20

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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.