Home / 648,265.20-972,973.80-381,692.40

Finding the Fourth Proportional to 648,265.20, 972,973.80 and 381,692.40

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Solution

The fourth proportional to 648,265.20, 972,973.80 and 381,692.40 is: 572,877.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,265.20 : 972,973.80 = 381,692.40 : x
  2. Step 2: Convert to fraction form
    648,265.20/972,973.80 = 381,692.40/x
  3. Step 3: Cross multiply
    648,265.20x = 972,973.80 × 381,692.40
  4. Step 4: Simplify right side
    648,265.20x = 371,376,704,859.12
  5. Step 5: Solve for x
    x = 371,376,704,859.12/648,265.20
  6. Step 6: Final answer
    x = 572,877.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.