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Finding the Fourth Proportional to 656,856.36, 906,461.19 and 355,050.36

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Solution

The fourth proportional to 656,856.36, 906,461.19 and 355,050.36 is: 489,969.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,856.36 : 906,461.19 = 355,050.36 : x
  2. Step 2: Convert to fraction form
    656,856.36/906,461.19 = 355,050.36/x
  3. Step 3: Cross multiply
    656,856.36x = 906,461.19 × 355,050.36
  4. Step 4: Simplify right side
    656,856.36x = 321,839,371,835.53
  5. Step 5: Solve for x
    x = 321,839,371,835.53/656,856.36
  6. Step 6: Final answer
    x = 489,969.18

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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.