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Finding the Fourth Proportional to 1,312,270, 1,810,932.60 and 708,658

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Solution

The fourth proportional to 1,312,270, 1,810,932.60 and 708,658 is: 977,948.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,270 : 1,810,932.60 = 708,658 : x
  2. Step 2: Convert to fraction form
    1,312,270/1,810,932.60 = 708,658/x
  3. Step 3: Cross multiply
    1,312,270x = 1,810,932.60 × 708,658
  4. Step 4: Simplify right side
    1,312,270x = 1,283,331,874,450.80
  5. Step 5: Solve for x
    x = 1,283,331,874,450.80/1,312,270
  6. Step 6: Final answer
    x = 977,948.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.