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Finding the Fourth Proportional to 647,528.10, 972,458.55 and 626,532.90

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Solution

The fourth proportional to 647,528.10, 972,458.55 and 626,532.90 is: 940,927.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,528.10 : 972,458.55 = 626,532.90 : x
  2. Step 2: Convert to fraction form
    647,528.10/972,458.55 = 626,532.90/x
  3. Step 3: Cross multiply
    647,528.10x = 972,458.55 × 626,532.90
  4. Step 4: Simplify right side
    647,528.10x = 609,277,275,461.30
  5. Step 5: Solve for x
    x = 609,277,275,461.30/647,528.10
  6. Step 6: Final answer
    x = 940,927.93

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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.