Home / 778,547.40-1,167,014.70-422,809.80

Finding the Fourth Proportional to 778,547.40, 1,167,014.70 and 422,809.80

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Solution

The fourth proportional to 778,547.40, 1,167,014.70 and 422,809.80 is: 633,776.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,547.40 : 1,167,014.70 = 422,809.80 : x
  2. Step 2: Convert to fraction form
    778,547.40/1,167,014.70 = 422,809.80/x
  3. Step 3: Cross multiply
    778,547.40x = 1,167,014.70 × 422,809.80
  4. Step 4: Simplify right side
    778,547.40x = 493,425,251,904.06
  5. Step 5: Solve for x
    x = 493,425,251,904.06/778,547.40
  6. Step 6: Final answer
    x = 633,776.76

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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.