Home / 679,643.15-936,969.30-542,288.61

Finding the Fourth Proportional to 679,643.15, 936,969.30 and 542,288.61

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Solution

The fourth proportional to 679,643.15, 936,969.30 and 542,288.61 is: 747,609.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,643.15 : 936,969.30 = 542,288.61 : x
  2. Step 2: Convert to fraction form
    679,643.15/936,969.30 = 542,288.61/x
  3. Step 3: Cross multiply
    679,643.15x = 936,969.30 × 542,288.61
  4. Step 4: Simplify right side
    679,643.15x = 508,107,779,309.67
  5. Step 5: Solve for x
    x = 508,107,779,309.67/679,643.15
  6. Step 6: Final answer
    x = 747,609.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.