Home / 703,914.30-971,389.07-397,985.40

Finding the Fourth Proportional to 703,914.30, 971,389.07 and 397,985.40

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Solution

The fourth proportional to 703,914.30, 971,389.07 and 397,985.40 is: 549,212.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,914.30 : 971,389.07 = 397,985.40 : x
  2. Step 2: Convert to fraction form
    703,914.30/971,389.07 = 397,985.40/x
  3. Step 3: Cross multiply
    703,914.30x = 971,389.07 × 397,985.40
  4. Step 4: Simplify right side
    703,914.30x = 386,598,667,579.58
  5. Step 5: Solve for x
    x = 386,598,667,579.58/703,914.30
  6. Step 6: Final answer
    x = 549,212.69

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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.