Home / 743,814.60-1,116,888.30-428,886.60

Finding the Fourth Proportional to 743,814.60, 1,116,888.30 and 428,886.60

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Solution

The fourth proportional to 743,814.60, 1,116,888.30 and 428,886.60 is: 644,002.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,814.60 : 1,116,888.30 = 428,886.60 : x
  2. Step 2: Convert to fraction form
    743,814.60/1,116,888.30 = 428,886.60/x
  3. Step 3: Cross multiply
    743,814.60x = 1,116,888.30 × 428,886.60
  4. Step 4: Simplify right side
    743,814.60x = 479,018,425,566.78
  5. Step 5: Solve for x
    x = 479,018,425,566.78/743,814.60
  6. Step 6: Final answer
    x = 644,002.45

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1.5x scale

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.