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Finding the Fourth Proportional to 647,237.60, 972,022.80 and 626,242.40

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Solution

The fourth proportional to 647,237.60, 972,022.80 and 626,242.40 is: 940,492.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,237.60 : 972,022.80 = 626,242.40 : x
  2. Step 2: Convert to fraction form
    647,237.60/972,022.80 = 626,242.40/x
  3. Step 3: Cross multiply
    647,237.60x = 972,022.80 × 626,242.40
  4. Step 4: Simplify right side
    647,237.60x = 608,721,891,126.72
  5. Step 5: Solve for x
    x = 608,721,891,126.72/647,237.60
  6. Step 6: Final answer
    x = 940,492.16

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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.