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Finding the Fourth Proportional to 618,071.32, 931,318.40 and 508,212.44

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Solution

The fourth proportional to 618,071.32, 931,318.40 and 508,212.44 is: 765,781.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,071.32 : 931,318.40 = 508,212.44 : x
  2. Step 2: Convert to fraction form
    618,071.32/931,318.40 = 508,212.44/x
  3. Step 3: Cross multiply
    618,071.32x = 931,318.40 × 508,212.44
  4. Step 4: Simplify right side
    618,071.32x = 473,307,596,480.90
  5. Step 5: Solve for x
    x = 473,307,596,480.90/618,071.32
  6. Step 6: Final answer
    x = 765,781.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.