Home / 742,405.80-1,113,608.70-476,685.30

Finding the Fourth Proportional to 742,405.80, 1,113,608.70 and 476,685.30

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Solution

The fourth proportional to 742,405.80, 1,113,608.70 and 476,685.30 is: 715,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,405.80 : 1,113,608.70 = 476,685.30 : x
  2. Step 2: Convert to fraction form
    742,405.80/1,113,608.70 = 476,685.30/x
  3. Step 3: Cross multiply
    742,405.80x = 1,113,608.70 × 476,685.30
  4. Step 4: Simplify right side
    742,405.80x = 530,840,897,242.11
  5. Step 5: Solve for x
    x = 530,840,897,242.11/742,405.80
  6. Step 6: Final answer
    x = 715,027.95

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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.