Home / 761,215.40-1,142,114.70-749,259.80

Finding the Fourth Proportional to 761,215.40, 1,142,114.70 and 749,259.80

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Solution

The fourth proportional to 761,215.40, 1,142,114.70 and 749,259.80 is: 1,124,176.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,215.40 : 1,142,114.70 = 749,259.80 : x
  2. Step 2: Convert to fraction form
    761,215.40/1,142,114.70 = 749,259.80/x
  3. Step 3: Cross multiply
    761,215.40x = 1,142,114.70 × 749,259.80
  4. Step 4: Simplify right side
    761,215.40x = 855,740,631,699.06
  5. Step 5: Solve for x
    x = 855,740,631,699.06/761,215.40
  6. Step 6: Final answer
    x = 1,124,176.72

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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.