Home / 538,036.03-742,465.77-308,428.71

Finding the Fourth Proportional to 538,036.03, 742,465.77 and 308,428.71

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Solution

The fourth proportional to 538,036.03, 742,465.77 and 308,428.71 is: 425,617.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,036.03 : 742,465.77 = 308,428.71 : x
  2. Step 2: Convert to fraction form
    538,036.03/742,465.77 = 308,428.71/x
  3. Step 3: Cross multiply
    538,036.03x = 742,465.77 × 308,428.71
  4. Step 4: Simplify right side
    538,036.03x = 228,997,755,176.86
  5. Step 5: Solve for x
    x = 228,997,755,176.86/538,036.03
  6. Step 6: Final answer
    x = 425,617.88

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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.