Home / 742,381.20-1,115,904.60-728,384.40

Finding the Fourth Proportional to 742,381.20, 1,115,904.60 and 728,384.40

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Solution

The fourth proportional to 742,381.20, 1,115,904.60 and 728,384.40 is: 1,094,865.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,381.20 : 1,115,904.60 = 728,384.40 : x
  2. Step 2: Convert to fraction form
    742,381.20/1,115,904.60 = 728,384.40/x
  3. Step 3: Cross multiply
    742,381.20x = 1,115,904.60 × 728,384.40
  4. Step 4: Simplify right side
    742,381.20x = 812,807,502,528.24
  5. Step 5: Solve for x
    x = 812,807,502,528.24/742,381.20
  6. Step 6: Final answer
    x = 1,094,865.42

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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.