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Finding the Fourth Proportional to 566,314.56, 781,529.58 and 311,681.34

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Solution

The fourth proportional to 566,314.56, 781,529.58 and 311,681.34 is: 430,128.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,314.56 : 781,529.58 = 311,681.34 : x
  2. Step 2: Convert to fraction form
    566,314.56/781,529.58 = 311,681.34/x
  3. Step 3: Cross multiply
    566,314.56x = 781,529.58 × 311,681.34
  4. Step 4: Simplify right side
    566,314.56x = 243,588,186,744.04
  5. Step 5: Solve for x
    x = 243,588,186,744.04/566,314.56
  6. Step 6: Final answer
    x = 430,128.77

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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.