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Finding the Fourth Proportional to 638,774.97, 956,169.50 and 470,485.32

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Solution

The fourth proportional to 638,774.97, 956,169.50 and 470,485.32 is: 704,260.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,774.97 : 956,169.50 = 470,485.32 : x
  2. Step 2: Convert to fraction form
    638,774.97/956,169.50 = 470,485.32/x
  3. Step 3: Cross multiply
    638,774.97x = 956,169.50 × 470,485.32
  4. Step 4: Simplify right side
    638,774.97x = 449,863,710,829.31
  5. Step 5: Solve for x
    x = 449,863,710,829.31/638,774.97
  6. Step 6: Final answer
    x = 704,260.08

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1.5x scale

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.