Home / 1,186,312.66-1,779,101.28-428,056.07

Finding the Fourth Proportional to 1,186,312.66, 1,779,101.28 and 428,056.07

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Solution

The fourth proportional to 1,186,312.66, 1,779,101.28 and 428,056.07 is: 641,951.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,312.66 : 1,779,101.28 = 428,056.07 : x
  2. Step 2: Convert to fraction form
    1,186,312.66/1,779,101.28 = 428,056.07/x
  3. Step 3: Cross multiply
    1,186,312.66x = 1,779,101.28 × 428,056.07
  4. Step 4: Simplify right side
    1,186,312.66x = 761,555,102,048.77
  5. Step 5: Solve for x
    x = 761,555,102,048.77/1,186,312.66
  6. Step 6: Final answer
    x = 641,951.42

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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.