Home / 709,832.80-1,064,749.20-457,890.40

Finding the Fourth Proportional to 709,832.80, 1,064,749.20 and 457,890.40

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Solution

The fourth proportional to 709,832.80, 1,064,749.20 and 457,890.40 is: 686,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,832.80 : 1,064,749.20 = 457,890.40 : x
  2. Step 2: Convert to fraction form
    709,832.80/1,064,749.20 = 457,890.40/x
  3. Step 3: Cross multiply
    709,832.80x = 1,064,749.20 × 457,890.40
  4. Step 4: Simplify right side
    709,832.80x = 487,538,437,087.68
  5. Step 5: Solve for x
    x = 487,538,437,087.68/709,832.80
  6. Step 6: Final answer
    x = 686,835.60

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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.