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Finding the Fourth Proportional to 552,106.71, 761,902.68 and 310,390.36

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Solution

The fourth proportional to 552,106.71, 761,902.68 and 310,390.36 is: 428,336.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,106.71 : 761,902.68 = 310,390.36 : x
  2. Step 2: Convert to fraction form
    552,106.71/761,902.68 = 310,390.36/x
  3. Step 3: Cross multiply
    552,106.71x = 761,902.68 × 310,390.36
  4. Step 4: Simplify right side
    552,106.71x = 236,487,247,130.17
  5. Step 5: Solve for x
    x = 236,487,247,130.17/552,106.71
  6. Step 6: Final answer
    x = 428,336.12

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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.