Home / 709,771.20-1,064,656.80-457,828.80

Finding the Fourth Proportional to 709,771.20, 1,064,656.80 and 457,828.80

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Solution

The fourth proportional to 709,771.20, 1,064,656.80 and 457,828.80 is: 686,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,771.20 : 1,064,656.80 = 457,828.80 : x
  2. Step 2: Convert to fraction form
    709,771.20/1,064,656.80 = 457,828.80/x
  3. Step 3: Cross multiply
    709,771.20x = 1,064,656.80 × 457,828.80
  4. Step 4: Simplify right side
    709,771.20x = 487,430,545,155.84
  5. Step 5: Solve for x
    x = 487,430,545,155.84/709,771.20
  6. Step 6: Final answer
    x = 686,743.20

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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.