Home / 872,240.40-1,307,485.80-399,265.20

Finding the Fourth Proportional to 872,240.40, 1,307,485.80 and 399,265.20

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Solution

The fourth proportional to 872,240.40, 1,307,485.80 and 399,265.20 is: 598,497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,240.40 : 1,307,485.80 = 399,265.20 : x
  2. Step 2: Convert to fraction form
    872,240.40/1,307,485.80 = 399,265.20/x
  3. Step 3: Cross multiply
    872,240.40x = 1,307,485.80 × 399,265.20
  4. Step 4: Simplify right side
    872,240.40x = 522,033,579,434.16
  5. Step 5: Solve for x
    x = 522,033,579,434.16/872,240.40
  6. Step 6: Final answer
    x = 598,497.36

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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.