Home / 643,467.30-888,091.47-357,079.38

Finding the Fourth Proportional to 643,467.30, 888,091.47 and 357,079.38

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Solution

The fourth proportional to 643,467.30, 888,091.47 and 357,079.38 is: 492,828.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,467.30 : 888,091.47 = 357,079.38 : x
  2. Step 2: Convert to fraction form
    643,467.30/888,091.47 = 357,079.38/x
  3. Step 3: Cross multiply
    643,467.30x = 888,091.47 × 357,079.38
  4. Step 4: Simplify right side
    643,467.30x = 317,119,151,490.89
  5. Step 5: Solve for x
    x = 317,119,151,490.89/643,467.30
  6. Step 6: Final answer
    x = 492,828.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.