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Finding the Fourth Proportional to 570,217.76, 786,894.50 and 308,567.32

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Solution

The fourth proportional to 570,217.76, 786,894.50 and 308,567.32 is: 425,819.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,217.76 : 786,894.50 = 308,567.32 : x
  2. Step 2: Convert to fraction form
    570,217.76/786,894.50 = 308,567.32/x
  3. Step 3: Cross multiply
    570,217.76x = 786,894.50 × 308,567.32
  4. Step 4: Simplify right side
    570,217.76x = 242,809,928,482.51
  5. Step 5: Solve for x
    x = 242,809,928,482.51/570,217.76
  6. Step 6: Final answer
    x = 425,819.65

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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.