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Finding the Fourth Proportional to 890,706.31, 1,335,854.57 and 530,978.76

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Solution

The fourth proportional to 890,706.31, 1,335,854.57 and 530,978.76 is: 796,345.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,706.31 : 1,335,854.57 = 530,978.76 : x
  2. Step 2: Convert to fraction form
    890,706.31/1,335,854.57 = 530,978.76/x
  3. Step 3: Cross multiply
    890,706.31x = 1,335,854.57 × 530,978.76
  4. Step 4: Simplify right side
    890,706.31x = 709,310,400,464.04
  5. Step 5: Solve for x
    x = 709,310,400,464.04/890,706.31
  6. Step 6: Final answer
    x = 796,345.99

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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.