Home / 389,279.80-583,919.70-310,547.80

Finding the Fourth Proportional to 389,279.80, 583,919.70 and 310,547.80

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Solution

The fourth proportional to 389,279.80, 583,919.70 and 310,547.80 is: 465,821.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,279.80 : 583,919.70 = 310,547.80 : x
  2. Step 2: Convert to fraction form
    389,279.80/583,919.70 = 310,547.80/x
  3. Step 3: Cross multiply
    389,279.80x = 583,919.70 × 310,547.80
  4. Step 4: Simplify right side
    389,279.80x = 181,334,978,211.66
  5. Step 5: Solve for x
    x = 181,334,978,211.66/389,279.80
  6. Step 6: Final answer
    x = 465,821.70

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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.