Home / 742,912.40-1,114,368.60-636,624.20

Finding the Fourth Proportional to 742,912.40, 1,114,368.60 and 636,624.20

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Solution

The fourth proportional to 742,912.40, 1,114,368.60 and 636,624.20 is: 954,936.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,912.40 : 1,114,368.60 = 636,624.20 : x
  2. Step 2: Convert to fraction form
    742,912.40/1,114,368.60 = 636,624.20/x
  3. Step 3: Cross multiply
    742,912.40x = 1,114,368.60 × 636,624.20
  4. Step 4: Simplify right side
    742,912.40x = 709,434,018,480.12
  5. Step 5: Solve for x
    x = 709,434,018,480.12/742,912.40
  6. Step 6: Final answer
    x = 954,936.30

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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.