Home / 885,963.80-1,330,257.90-686,509.40

Finding the Fourth Proportional to 885,963.80, 1,330,257.90 and 686,509.40

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Solution

The fourth proportional to 885,963.80, 1,330,257.90 and 686,509.40 is: 1,030,780.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,963.80 : 1,330,257.90 = 686,509.40 : x
  2. Step 2: Convert to fraction form
    885,963.80/1,330,257.90 = 686,509.40/x
  3. Step 3: Cross multiply
    885,963.80x = 1,330,257.90 × 686,509.40
  4. Step 4: Simplify right side
    885,963.80x = 913,234,552,774.26
  5. Step 5: Solve for x
    x = 913,234,552,774.26/885,963.80
  6. Step 6: Final answer
    x = 1,030,780.89

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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.