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Finding the Fourth Proportional to 566,103.66, 781,211.97 and 311,459.10

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Solution

The fourth proportional to 566,103.66, 781,211.97 and 311,459.10 is: 429,807.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,103.66 : 781,211.97 = 311,459.10 : x
  2. Step 2: Convert to fraction form
    566,103.66/781,211.97 = 311,459.10/x
  3. Step 3: Cross multiply
    566,103.66x = 781,211.97 × 311,459.10
  4. Step 4: Simplify right side
    566,103.66x = 243,315,577,085.43
  5. Step 5: Solve for x
    x = 243,315,577,085.43/566,103.66
  6. Step 6: Final answer
    x = 429,807.46

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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.