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Finding the Fourth Proportional to 566,060.40, 781,143.64 and 311,408.88

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Solution

The fourth proportional to 566,060.40, 781,143.64 and 311,408.88 is: 429,733.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,060.40 : 781,143.64 = 311,408.88 : x
  2. Step 2: Convert to fraction form
    566,060.40/781,143.64 = 311,408.88/x
  3. Step 3: Cross multiply
    566,060.40x = 781,143.64 × 311,408.88
  4. Step 4: Simplify right side
    566,060.40x = 243,255,066,051.52
  5. Step 5: Solve for x
    x = 243,255,066,051.52/566,060.40
  6. Step 6: Final answer
    x = 429,733.41

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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.