Home / 688,485.15-1,032,371.28-309,079.23

Finding the Fourth Proportional to 688,485.15, 1,032,371.28 and 309,079.23

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Solution

The fourth proportional to 688,485.15, 1,032,371.28 and 309,079.23 is: 463,458.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,485.15 : 1,032,371.28 = 309,079.23 : x
  2. Step 2: Convert to fraction form
    688,485.15/1,032,371.28 = 309,079.23/x
  3. Step 3: Cross multiply
    688,485.15x = 1,032,371.28 × 309,079.23
  4. Step 4: Simplify right side
    688,485.15x = 319,084,520,296.51
  5. Step 5: Solve for x
    x = 319,084,520,296.51/688,485.15
  6. Step 6: Final answer
    x = 463,458.83

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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.