Home / 1,247,051.60-1,871,128.20-607,000.40

Finding the Fourth Proportional to 1,247,051.60, 1,871,128.20 and 607,000.40

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Solution

The fourth proportional to 1,247,051.60, 1,871,128.20 and 607,000.40 is: 910,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,051.60 : 1,871,128.20 = 607,000.40 : x
  2. Step 2: Convert to fraction form
    1,247,051.60/1,871,128.20 = 607,000.40/x
  3. Step 3: Cross multiply
    1,247,051.60x = 1,871,128.20 × 607,000.40
  4. Step 4: Simplify right side
    1,247,051.60x = 1,135,775,565,851.28
  5. Step 5: Solve for x
    x = 1,135,775,565,851.28/1,247,051.60
  6. Step 6: Final answer
    x = 910,768.70

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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.