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Finding the Fourth Proportional to 1,707,946.76, 2,559,947.70 and 642,308.60

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Solution

The fourth proportional to 1,707,946.76, 2,559,947.70 and 642,308.60 is: 962,721.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707,946.76 : 2,559,947.70 = 642,308.60 : x
  2. Step 2: Convert to fraction form
    1,707,946.76/2,559,947.70 = 642,308.60/x
  3. Step 3: Cross multiply
    1,707,946.76x = 2,559,947.70 × 642,308.60
  4. Step 4: Simplify right side
    1,707,946.76x = 1,644,276,423,260.22
  5. Step 5: Solve for x
    x = 1,644,276,423,260.22/1,707,946.76
  6. Step 6: Final answer
    x = 962,721.12

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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.