Home / 643,579.07-888,139.08-357,101.24

Finding the Fourth Proportional to 643,579.07, 888,139.08 and 357,101.24

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Solution

The fourth proportional to 643,579.07, 888,139.08 and 357,101.24 is: 492,799.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,579.07 : 888,139.08 = 357,101.24 : x
  2. Step 2: Convert to fraction form
    643,579.07/888,139.08 = 357,101.24/x
  3. Step 3: Cross multiply
    643,579.07x = 888,139.08 × 357,101.24
  4. Step 4: Simplify right side
    643,579.07x = 317,155,562,319.76
  5. Step 5: Solve for x
    x = 317,155,562,319.76/643,579.07
  6. Step 6: Final answer
    x = 492,799.69

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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.