Home / 858,606.30-1,287,909.45-606,663.90

Finding the Fourth Proportional to 858,606.30, 1,287,909.45 and 606,663.90

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Solution

The fourth proportional to 858,606.30, 1,287,909.45 and 606,663.90 is: 909,995.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,606.30 : 1,287,909.45 = 606,663.90 : x
  2. Step 2: Convert to fraction form
    858,606.30/1,287,909.45 = 606,663.90/x
  3. Step 3: Cross multiply
    858,606.30x = 1,287,909.45 × 606,663.90
  4. Step 4: Simplify right side
    858,606.30x = 781,328,169,783.86
  5. Step 5: Solve for x
    x = 781,328,169,783.86/858,606.30
  6. Step 6: Final answer
    x = 909,995.85

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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.