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Finding the Fourth Proportional to 692,308.02, 955,384.56 and 390,502.02

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Solution

The fourth proportional to 692,308.02, 955,384.56 and 390,502.02 is: 538,892.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,308.02 : 955,384.56 = 390,502.02 : x
  2. Step 2: Convert to fraction form
    692,308.02/955,384.56 = 390,502.02/x
  3. Step 3: Cross multiply
    692,308.02x = 955,384.56 × 390,502.02
  4. Step 4: Simplify right side
    692,308.02x = 373,079,600,556.81
  5. Step 5: Solve for x
    x = 373,079,600,556.81/692,308.02
  6. Step 6: Final answer
    x = 538,892.50

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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.