Home / 710,491.20-1,065,736.80-486,542.40

Finding the Fourth Proportional to 710,491.20, 1,065,736.80 and 486,542.40

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Solution

The fourth proportional to 710,491.20, 1,065,736.80 and 486,542.40 is: 729,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,491.20 : 1,065,736.80 = 486,542.40 : x
  2. Step 2: Convert to fraction form
    710,491.20/1,065,736.80 = 486,542.40/x
  3. Step 3: Cross multiply
    710,491.20x = 1,065,736.80 × 486,542.40
  4. Step 4: Simplify right side
    710,491.20x = 518,526,140,440.32
  5. Step 5: Solve for x
    x = 518,526,140,440.32/710,491.20
  6. Step 6: Final answer
    x = 729,813.60

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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.