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Finding the Fourth Proportional to 695,224.36, 958,914 and 638,047.98

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Solution

The fourth proportional to 695,224.36, 958,914 and 638,047.98 is: 880,051.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,224.36 : 958,914 = 638,047.98 : x
  2. Step 2: Convert to fraction form
    695,224.36/958,914 = 638,047.98/x
  3. Step 3: Cross multiply
    695,224.36x = 958,914 × 638,047.98
  4. Step 4: Simplify right side
    695,224.36x = 611,833,140,693.72
  5. Step 5: Solve for x
    x = 611,833,140,693.72/695,224.36
  6. Step 6: Final answer
    x = 880,051.36

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1.5x scale

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.