Home / 688,509.64-1,032,724.32-309,332.44

Finding the Fourth Proportional to 688,509.64, 1,032,724.32 and 309,332.44

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Solution

The fourth proportional to 688,509.64, 1,032,724.32 and 309,332.44 is: 463,980.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,509.64 : 1,032,724.32 = 309,332.44 : x
  2. Step 2: Convert to fraction form
    688,509.64/1,032,724.32 = 309,332.44/x
  3. Step 3: Cross multiply
    688,509.64x = 1,032,724.32 × 309,332.44
  4. Step 4: Simplify right side
    688,509.64x = 319,455,133,752.94
  5. Step 5: Solve for x
    x = 319,455,133,752.94/688,509.64
  6. Step 6: Final answer
    x = 463,980.63

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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.