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Finding the Fourth Proportional to 470,354.49, 708,669.60 and 425,427.57

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Solution

The fourth proportional to 470,354.49, 708,669.60 and 425,427.57 is: 640,979.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,354.49 : 708,669.60 = 425,427.57 : x
  2. Step 2: Convert to fraction form
    470,354.49/708,669.60 = 425,427.57/x
  3. Step 3: Cross multiply
    470,354.49x = 708,669.60 × 425,427.57
  4. Step 4: Simplify right side
    470,354.49x = 301,487,585,860.87
  5. Step 5: Solve for x
    x = 301,487,585,860.87/470,354.49
  6. Step 6: Final answer
    x = 640,979.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.