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Finding the Fourth Proportional to 636,748.33, 878,632.93 and 430,465.63

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Solution

The fourth proportional to 636,748.33, 878,632.93 and 430,465.63 is: 593,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,748.33 : 878,632.93 = 430,465.63 : x
  2. Step 2: Convert to fraction form
    636,748.33/878,632.93 = 430,465.63/x
  3. Step 3: Cross multiply
    636,748.33x = 878,632.93 × 430,465.63
  4. Step 4: Simplify right side
    636,748.33x = 378,221,276,092.70
  5. Step 5: Solve for x
    x = 378,221,276,092.70/636,748.33
  6. Step 6: Final answer
    x = 593,988.64

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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.