Home / 686,337.72-1,029,155.52-286,869.48

Finding the Fourth Proportional to 686,337.72, 1,029,155.52 and 286,869.48

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Solution

The fourth proportional to 686,337.72, 1,029,155.52 and 286,869.48 is: 430,157.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,337.72 : 1,029,155.52 = 286,869.48 : x
  2. Step 2: Convert to fraction form
    686,337.72/1,029,155.52 = 286,869.48/x
  3. Step 3: Cross multiply
    686,337.72x = 1,029,155.52 × 286,869.48
  4. Step 4: Simplify right side
    686,337.72x = 295,233,308,861.53
  5. Step 5: Solve for x
    x = 295,233,308,861.53/686,337.72
  6. Step 6: Final answer
    x = 430,157.49

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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.