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Finding the Fourth Proportional to 508,741.60, 702,066.12 and 317,865.70

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Solution

The fourth proportional to 508,741.60, 702,066.12 and 317,865.70 is: 438,656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,741.60 : 702,066.12 = 317,865.70 : x
  2. Step 2: Convert to fraction form
    508,741.60/702,066.12 = 317,865.70/x
  3. Step 3: Cross multiply
    508,741.60x = 702,066.12 × 317,865.70
  4. Step 4: Simplify right side
    508,741.60x = 223,162,738,680.08
  5. Step 5: Solve for x
    x = 223,162,738,680.08/508,741.60
  6. Step 6: Final answer
    x = 438,656.36

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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.