Home / 1,208,000.40-1,812,000.60-648,128.40

Finding the Fourth Proportional to 1,208,000.40, 1,812,000.60 and 648,128.40

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Solution

The fourth proportional to 1,208,000.40, 1,812,000.60 and 648,128.40 is: 972,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,000.40 : 1,812,000.60 = 648,128.40 : x
  2. Step 2: Convert to fraction form
    1,208,000.40/1,812,000.60 = 648,128.40/x
  3. Step 3: Cross multiply
    1,208,000.40x = 1,812,000.60 × 648,128.40
  4. Step 4: Simplify right side
    1,208,000.40x = 1,174,409,049,677.04
  5. Step 5: Solve for x
    x = 1,174,409,049,677.04/1,208,000.40
  6. Step 6: Final answer
    x = 972,192.60

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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.