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Finding the Fourth Proportional to 1,873,440, 2,810,160 and 691,488

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Solution

The fourth proportional to 1,873,440, 2,810,160 and 691,488 is: 1,037,232

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,873,440 : 2,810,160 = 691,488 : x
  2. Step 2: Convert to fraction form
    1,873,440/2,810,160 = 691,488/x
  3. Step 3: Cross multiply
    1,873,440x = 2,810,160 × 691,488
  4. Step 4: Simplify right side
    1,873,440x = 1,943,191,918,080
  5. Step 5: Solve for x
    x = 1,943,191,918,080/1,873,440
  6. Step 6: Final answer
    x = 1,037,232

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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.