Home / 688,858.05-1,032,931.10-309,454.40

Finding the Fourth Proportional to 688,858.05, 1,032,931.10 and 309,454.40

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Solution

The fourth proportional to 688,858.05, 1,032,931.10 and 309,454.40 is: 464,021.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,858.05 : 1,032,931.10 = 309,454.40 : x
  2. Step 2: Convert to fraction form
    688,858.05/1,032,931.10 = 309,454.40/x
  3. Step 3: Cross multiply
    688,858.05x = 1,032,931.10 × 309,454.40
  4. Step 4: Simplify right side
    688,858.05x = 319,645,067,079.91
  5. Step 5: Solve for x
    x = 319,645,067,079.91/688,858.05
  6. Step 6: Final answer
    x = 464,021.68

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1.5x scale

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.