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Finding the Fourth Proportional to 692,897.66, 956,226 and 398,546.82

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Solution

The fourth proportional to 692,897.66, 956,226 and 398,546.82 is: 550,010.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,897.66 : 956,226 = 398,546.82 : x
  2. Step 2: Convert to fraction form
    692,897.66/956,226 = 398,546.82/x
  3. Step 3: Cross multiply
    692,897.66x = 956,226 × 398,546.82
  4. Step 4: Simplify right side
    692,897.66x = 381,100,831,501.32
  5. Step 5: Solve for x
    x = 381,100,831,501.32/692,897.66
  6. Step 6: Final answer
    x = 550,010.28

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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.