Home / 643,510.12-888,044.07-357,029.52

Finding the Fourth Proportional to 643,510.12, 888,044.07 and 357,029.52

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Solution

The fourth proportional to 643,510.12, 888,044.07 and 357,029.52 is: 492,700.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,510.12 : 888,044.07 = 357,029.52 : x
  2. Step 2: Convert to fraction form
    643,510.12/888,044.07 = 357,029.52/x
  3. Step 3: Cross multiply
    643,510.12x = 888,044.07 × 357,029.52
  4. Step 4: Simplify right side
    643,510.12x = 317,057,948,050.95
  5. Step 5: Solve for x
    x = 317,057,948,050.95/643,510.12
  6. Step 6: Final answer
    x = 492,700.80

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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.