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Finding the Fourth Proportional to 680,730.50, 939,430.49 and 374,829.35

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Solution

The fourth proportional to 680,730.50, 939,430.49 and 374,829.35 is: 517,276.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,730.50 : 939,430.49 = 374,829.35 : x
  2. Step 2: Convert to fraction form
    680,730.50/939,430.49 = 374,829.35/x
  3. Step 3: Cross multiply
    680,730.50x = 939,430.49 × 374,829.35
  4. Step 4: Simplify right side
    680,730.50x = 352,126,113,365.58
  5. Step 5: Solve for x
    x = 352,126,113,365.58/680,730.50
  6. Step 6: Final answer
    x = 517,276.83

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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.