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Finding the Fourth Proportional to 520,030.70, 730,142.50 and 520,030.70

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Solution

The fourth proportional to 520,030.70, 730,142.50 and 520,030.70 is: 730,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,030.70 : 730,142.50 = 520,030.70 : x
  2. Step 2: Convert to fraction form
    520,030.70/730,142.50 = 520,030.70/x
  3. Step 3: Cross multiply
    520,030.70x = 730,142.50 × 520,030.70
  4. Step 4: Simplify right side
    520,030.70x = 379,696,515,374.75
  5. Step 5: Solve for x
    x = 379,696,515,374.75/520,030.70
  6. Step 6: Final answer
    x = 730,142.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.