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Finding the Fourth Proportional to 478,518.60, 716,892.30 and 278,934.60

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Solution

The fourth proportional to 478,518.60, 716,892.30 and 278,934.60 is: 417,885.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,518.60 : 716,892.30 = 278,934.60 : x
  2. Step 2: Convert to fraction form
    478,518.60/716,892.30 = 278,934.60/x
  3. Step 3: Cross multiply
    478,518.60x = 716,892.30 × 278,934.60
  4. Step 4: Simplify right side
    478,518.60x = 199,966,066,943.58
  5. Step 5: Solve for x
    x = 199,966,066,943.58/478,518.60
  6. Step 6: Final answer
    x = 417,885.67

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1.5x scale

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.