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Finding the Fourth Proportional to 686,427.16, 946,707.87 and 483,151

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Solution

The fourth proportional to 686,427.16, 946,707.87 and 483,151 is: 666,353.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,427.16 : 946,707.87 = 483,151 : x
  2. Step 2: Convert to fraction form
    686,427.16/946,707.87 = 483,151/x
  3. Step 3: Cross multiply
    686,427.16x = 946,707.87 × 483,151
  4. Step 4: Simplify right side
    686,427.16x = 457,402,854,098.37
  5. Step 5: Solve for x
    x = 457,402,854,098.37/686,427.16
  6. Step 6: Final answer
    x = 666,353.08

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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.