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Finding the Fourth Proportional to 566,393.92, 781,607.28 and 311,739.64

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Solution

The fourth proportional to 566,393.92, 781,607.28 and 311,739.64 is: 430,191.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,393.92 : 781,607.28 = 311,739.64 : x
  2. Step 2: Convert to fraction form
    566,393.92/781,607.28 = 311,739.64/x
  3. Step 3: Cross multiply
    566,393.92x = 781,607.28 × 311,739.64
  4. Step 4: Simplify right side
    566,393.92x = 243,657,972,088.58
  5. Step 5: Solve for x
    x = 243,657,972,088.58/566,393.92
  6. Step 6: Final answer
    x = 430,191.72

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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.