Home / 779,670.72-1,167,403.35-509,128.68

Finding the Fourth Proportional to 779,670.72, 1,167,403.35 and 509,128.68

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Solution

The fourth proportional to 779,670.72, 1,167,403.35 and 509,128.68 is: 762,319.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,670.72 : 1,167,403.35 = 509,128.68 : x
  2. Step 2: Convert to fraction form
    779,670.72/1,167,403.35 = 509,128.68/x
  3. Step 3: Cross multiply
    779,670.72x = 1,167,403.35 × 509,128.68
  4. Step 4: Simplify right side
    779,670.72x = 594,358,526,613.08
  5. Step 5: Solve for x
    x = 594,358,526,613.08/779,670.72
  6. Step 6: Final answer
    x = 762,319.93

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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.