Home / 515,853,008.80-772,771,743.60-310,771,895.20

Finding the Fourth Proportional to 515,853,008.80, 772,771,743.60 and 310,771,895.20

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Solution

The fourth proportional to 515,853,008.80, 772,771,743.60 and 310,771,895.20 is: 465,550,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,853,008.80 : 772,771,743.60 = 310,771,895.20 : x
  2. Step 2: Convert to fraction form
    515,853,008.80/772,771,743.60 = 310,771,895.20/x
  3. Step 3: Cross multiply
    515,853,008.80x = 772,771,743.60 × 310,771,895.20
  4. Step 4: Simplify right side
    515,853,008.80x = 240,155,739,315,580,480
  5. Step 5: Solve for x
    x = 240,155,739,315,580,480/515,853,008.80
  6. Step 6: Final answer
    x = 465,550,719.33

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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.