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Finding the Fourth Proportional to 507,640.23, 700,454.72 and 289,749.42

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Solution

The fourth proportional to 507,640.23, 700,454.72 and 289,749.42 is: 399,803.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,640.23 : 700,454.72 = 289,749.42 : x
  2. Step 2: Convert to fraction form
    507,640.23/700,454.72 = 289,749.42/x
  3. Step 3: Cross multiply
    507,640.23x = 700,454.72 × 289,749.42
  4. Step 4: Simplify right side
    507,640.23x = 202,956,348,856.26
  5. Step 5: Solve for x
    x = 202,956,348,856.26/507,640.23
  6. Step 6: Final answer
    x = 399,803.52

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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.