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Finding the Fourth Proportional to 531,817.40, 732,415.02 and 520,205.24

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Solution

The fourth proportional to 531,817.40, 732,415.02 and 520,205.24 is: 716,422.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,817.40 : 732,415.02 = 520,205.24 : x
  2. Step 2: Convert to fraction form
    531,817.40/732,415.02 = 520,205.24/x
  3. Step 3: Cross multiply
    531,817.40x = 732,415.02 × 520,205.24
  4. Step 4: Simplify right side
    531,817.40x = 381,006,131,258.71
  5. Step 5: Solve for x
    x = 381,006,131,258.71/531,817.40
  6. Step 6: Final answer
    x = 716,422.84

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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.