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Finding the Fourth Proportional to 626,768.60, 939,764.10 and 360,397.40

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Solution

The fourth proportional to 626,768.60, 939,764.10 and 360,397.40 is: 540,372.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,768.60 : 939,764.10 = 360,397.40 : x
  2. Step 2: Convert to fraction form
    626,768.60/939,764.10 = 360,397.40/x
  3. Step 3: Cross multiply
    626,768.60x = 939,764.10 × 360,397.40
  4. Step 4: Simplify right side
    626,768.60x = 338,688,538,253.34
  5. Step 5: Solve for x
    x = 338,688,538,253.34/626,768.60
  6. Step 6: Final answer
    x = 540,372.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.