Home / 1,279,722.96-1,919,686.50-438,282

Finding the Fourth Proportional to 1,279,722.96, 1,919,686.50 and 438,282

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Solution

The fourth proportional to 1,279,722.96, 1,919,686.50 and 438,282 is: 657,457.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,722.96 : 1,919,686.50 = 438,282 : x
  2. Step 2: Convert to fraction form
    1,279,722.96/1,919,686.50 = 438,282/x
  3. Step 3: Cross multiply
    1,279,722.96x = 1,919,686.50 × 438,282
  4. Step 4: Simplify right side
    1,279,722.96x = 841,364,038,593
  5. Step 5: Solve for x
    x = 841,364,038,593/1,279,722.96
  6. Step 6: Final answer
    x = 657,457.95

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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.