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Finding the Fourth Proportional to 635,592.40, 877,123.84 and 345,209.64

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Solution

The fourth proportional to 635,592.40, 877,123.84 and 345,209.64 is: 476,392.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,592.40 : 877,123.84 = 345,209.64 : x
  2. Step 2: Convert to fraction form
    635,592.40/877,123.84 = 345,209.64/x
  3. Step 3: Cross multiply
    635,592.40x = 877,123.84 × 345,209.64
  4. Step 4: Simplify right side
    635,592.40x = 302,791,605,041.82
  5. Step 5: Solve for x
    x = 302,791,605,041.82/635,592.40
  6. Step 6: Final answer
    x = 476,392.74

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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.