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Finding the Fourth Proportional to 607,160.88, 838,421.28 and 378,111.48

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Solution

The fourth proportional to 607,160.88, 838,421.28 and 378,111.48 is: 522,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,160.88 : 838,421.28 = 378,111.48 : x
  2. Step 2: Convert to fraction form
    607,160.88/838,421.28 = 378,111.48/x
  3. Step 3: Cross multiply
    607,160.88x = 838,421.28 × 378,111.48
  4. Step 4: Simplify right side
    607,160.88x = 317,016,711,044.29
  5. Step 5: Solve for x
    x = 317,016,711,044.29/607,160.88
  6. Step 6: Final answer
    x = 522,129.67

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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.