Home / 627,047.20-865,296.14-355,117.05

Finding the Fourth Proportional to 627,047.20, 865,296.14 and 355,117.05

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Solution

The fourth proportional to 627,047.20, 865,296.14 and 355,117.05 is: 490,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,047.20 : 865,296.14 = 355,117.05 : x
  2. Step 2: Convert to fraction form
    627,047.20/865,296.14 = 355,117.05/x
  3. Step 3: Cross multiply
    627,047.20x = 865,296.14 × 355,117.05
  4. Step 4: Simplify right side
    627,047.20x = 307,281,410,369.86
  5. Step 5: Solve for x
    x = 307,281,410,369.86/627,047.20
  6. Step 6: Final answer
    x = 490,045.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.