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Finding the Fourth Proportional to 429,952.19, 591,978.78 and 390,094.11

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Solution

The fourth proportional to 429,952.19, 591,978.78 and 390,094.11 is: 537,100.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,952.19 : 591,978.78 = 390,094.11 : x
  2. Step 2: Convert to fraction form
    429,952.19/591,978.78 = 390,094.11/x
  3. Step 3: Cross multiply
    429,952.19x = 591,978.78 × 390,094.11
  4. Step 4: Simplify right side
    429,952.19x = 230,927,435,322.99
  5. Step 5: Solve for x
    x = 230,927,435,322.99/429,952.19
  6. Step 6: Final answer
    x = 537,100.27

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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.