Home / 643,846.24-888,466.08-357,366.40

Finding the Fourth Proportional to 643,846.24, 888,466.08 and 357,366.40

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Solution

The fourth proportional to 643,846.24, 888,466.08 and 357,366.40 is: 493,142.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,846.24 : 888,466.08 = 357,366.40 : x
  2. Step 2: Convert to fraction form
    643,846.24/888,466.08 = 357,366.40/x
  3. Step 3: Cross multiply
    643,846.24x = 888,466.08 × 357,366.40
  4. Step 4: Simplify right side
    643,846.24x = 317,507,924,531.71
  5. Step 5: Solve for x
    x = 317,507,924,531.71/643,846.24
  6. Step 6: Final answer
    x = 493,142.47

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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.