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Finding the Fourth Proportional to 644,094.40, 888,805 and 357,597.40

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Solution

The fourth proportional to 644,094.40, 888,805 and 357,597.40 is: 493,459.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,094.40 : 888,805 = 357,597.40 : x
  2. Step 2: Convert to fraction form
    644,094.40/888,805 = 357,597.40/x
  3. Step 3: Cross multiply
    644,094.40x = 888,805 × 357,597.40
  4. Step 4: Simplify right side
    644,094.40x = 317,834,357,107
  5. Step 5: Solve for x
    x = 317,834,357,107/644,094.40
  6. Step 6: Final answer
    x = 493,459.28

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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.