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Finding the Fourth Proportional to 1,977,802.73, 2,966,818.93 and 763,386.23

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Solution

The fourth proportional to 1,977,802.73, 2,966,818.93 and 763,386.23 is: 1,145,123.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977,802.73 : 2,966,818.93 = 763,386.23 : x
  2. Step 2: Convert to fraction form
    1,977,802.73/2,966,818.93 = 763,386.23/x
  3. Step 3: Cross multiply
    1,977,802.73x = 2,966,818.93 × 763,386.23
  4. Step 4: Simplify right side
    1,977,802.73x = 2,264,828,726,272.97
  5. Step 5: Solve for x
    x = 2,264,828,726,272.97/1,977,802.73
  6. Step 6: Final answer
    x = 1,145,123.67

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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.