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Finding the Fourth Proportional to 525,343.70, 788,015.55 and 312,767.30

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Solution

The fourth proportional to 525,343.70, 788,015.55 and 312,767.30 is: 469,150.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,343.70 : 788,015.55 = 312,767.30 : x
  2. Step 2: Convert to fraction form
    525,343.70/788,015.55 = 312,767.30/x
  3. Step 3: Cross multiply
    525,343.70x = 788,015.55 × 312,767.30
  4. Step 4: Simplify right side
    525,343.70x = 246,465,495,931.52
  5. Step 5: Solve for x
    x = 246,465,495,931.52/525,343.70
  6. Step 6: Final answer
    x = 469,150.95

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Similar ratio
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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.