Home / 859,266.60-1,287,150.30-438,779.40

Finding the Fourth Proportional to 859,266.60, 1,287,150.30 and 438,779.40

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Solution

The fourth proportional to 859,266.60, 1,287,150.30 and 438,779.40 is: 657,275.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,266.60 : 1,287,150.30 = 438,779.40 : x
  2. Step 2: Convert to fraction form
    859,266.60/1,287,150.30 = 438,779.40/x
  3. Step 3: Cross multiply
    859,266.60x = 1,287,150.30 × 438,779.40
  4. Step 4: Simplify right side
    859,266.60x = 564,775,036,343.82
  5. Step 5: Solve for x
    x = 564,775,036,343.82/859,266.60
  6. Step 6: Final answer
    x = 657,275.68

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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.