Home / 643,924.07-888,570.75-357,421.59

Finding the Fourth Proportional to 643,924.07, 888,570.75 and 357,421.59

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Solution

The fourth proportional to 643,924.07, 888,570.75 and 357,421.59 is: 493,217.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,924.07 : 888,570.75 = 357,421.59 : x
  2. Step 2: Convert to fraction form
    643,924.07/888,570.75 = 357,421.59/x
  3. Step 3: Cross multiply
    643,924.07x = 888,570.75 × 357,421.59
  4. Step 4: Simplify right side
    643,924.07x = 317,594,370,292.49
  5. Step 5: Solve for x
    x = 317,594,370,292.49/643,924.07
  6. Step 6: Final answer
    x = 493,217.12

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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.