Home / 991,069.10-1,486,603.66-430,103.60

Finding the Fourth Proportional to 991,069.10, 1,486,603.66 and 430,103.60

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Solution

The fourth proportional to 991,069.10, 1,486,603.66 and 430,103.60 is: 645,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,069.10 : 1,486,603.66 = 430,103.60 : x
  2. Step 2: Convert to fraction form
    991,069.10/1,486,603.66 = 430,103.60/x
  3. Step 3: Cross multiply
    991,069.10x = 1,486,603.66 × 430,103.60
  4. Step 4: Simplify right side
    991,069.10x = 639,393,585,939.18
  5. Step 5: Solve for x
    x = 639,393,585,939.18/991,069.10
  6. Step 6: Final answer
    x = 645,155.40

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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.