Home / 638,682.03-956,938.59-385,430.40

Finding the Fourth Proportional to 638,682.03, 956,938.59 and 385,430.40

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Solution

The fourth proportional to 638,682.03, 956,938.59 and 385,430.40 is: 577,491.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,682.03 : 956,938.59 = 385,430.40 : x
  2. Step 2: Convert to fraction form
    638,682.03/956,938.59 = 385,430.40/x
  3. Step 3: Cross multiply
    638,682.03x = 956,938.59 × 385,430.40
  4. Step 4: Simplify right side
    638,682.03x = 368,833,223,519.14
  5. Step 5: Solve for x
    x = 368,833,223,519.14/638,682.03
  6. Step 6: Final answer
    x = 577,491.16

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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.