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Finding the Fourth Proportional to 643,567.02, 888,122.49 and 357,089.16

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Solution

The fourth proportional to 643,567.02, 888,122.49 and 357,089.16 is: 492,783.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,567.02 : 888,122.49 = 357,089.16 : x
  2. Step 2: Convert to fraction form
    643,567.02/888,122.49 = 357,089.16/x
  3. Step 3: Cross multiply
    643,567.02x = 888,122.49 × 357,089.16
  4. Step 4: Simplify right side
    643,567.02x = 317,138,913,931.21
  5. Step 5: Solve for x
    x = 317,138,913,931.21/643,567.02
  6. Step 6: Final answer
    x = 492,783.04

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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.