Home / 566,408.18-781,665.45-311,783.06

Finding the Fourth Proportional to 566,408.18, 781,665.45 and 311,783.06

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Solution

The fourth proportional to 566,408.18, 781,665.45 and 311,783.06 is: 430,272.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,408.18 : 781,665.45 = 311,783.06 : x
  2. Step 2: Convert to fraction form
    566,408.18/781,665.45 = 311,783.06/x
  3. Step 3: Cross multiply
    566,408.18x = 781,665.45 × 311,783.06
  4. Step 4: Simplify right side
    566,408.18x = 243,710,045,897.28
  5. Step 5: Solve for x
    x = 243,710,045,897.28/566,408.18
  6. Step 6: Final answer
    x = 430,272.82

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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.