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Finding the Fourth Proportional to 525,788.70, 788,346.80 and 312,499.71

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Solution

The fourth proportional to 525,788.70, 788,346.80 and 312,499.71 is: 468,549.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,788.70 : 788,346.80 = 312,499.71 : x
  2. Step 2: Convert to fraction form
    525,788.70/788,346.80 = 312,499.71/x
  3. Step 3: Cross multiply
    525,788.70x = 788,346.80 × 312,499.71
  4. Step 4: Simplify right side
    525,788.70x = 246,358,144,816.93
  5. Step 5: Solve for x
    x = 246,358,144,816.93/525,788.70
  6. Step 6: Final answer
    x = 468,549.71

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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.