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Finding the Fourth Proportional to 570,309.08, 787,014.78 and 315,645.08

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Solution

The fourth proportional to 570,309.08, 787,014.78 and 315,645.08 is: 435,583.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,309.08 : 787,014.78 = 315,645.08 : x
  2. Step 2: Convert to fraction form
    570,309.08/787,014.78 = 315,645.08/x
  3. Step 3: Cross multiply
    570,309.08x = 787,014.78 × 315,645.08
  4. Step 4: Simplify right side
    570,309.08x = 248,417,343,194.28
  5. Step 5: Solve for x
    x = 248,417,343,194.28/570,309.08
  6. Step 6: Final answer
    x = 435,583.71

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1.5x scale

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.