Home / 603,721.20-906,618.60-427,465.20

Finding the Fourth Proportional to 603,721.20, 906,618.60 and 427,465.20

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Solution

The fourth proportional to 603,721.20, 906,618.60 and 427,465.20 is: 641,931.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,721.20 : 906,618.60 = 427,465.20 : x
  2. Step 2: Convert to fraction form
    603,721.20/906,618.60 = 427,465.20/x
  3. Step 3: Cross multiply
    603,721.20x = 906,618.60 × 427,465.20
  4. Step 4: Simplify right side
    603,721.20x = 387,547,901,172.72
  5. Step 5: Solve for x
    x = 387,547,901,172.72/603,721.20
  6. Step 6: Final answer
    x = 641,931.91

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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.