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Finding the Fourth Proportional to 978,210.30, 1,467,315.45 and 604,443.90

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Solution

The fourth proportional to 978,210.30, 1,467,315.45 and 604,443.90 is: 906,665.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,210.30 : 1,467,315.45 = 604,443.90 : x
  2. Step 2: Convert to fraction form
    978,210.30/1,467,315.45 = 604,443.90/x
  3. Step 3: Cross multiply
    978,210.30x = 1,467,315.45 × 604,443.90
  4. Step 4: Simplify right side
    978,210.30x = 886,909,873,128.26
  5. Step 5: Solve for x
    x = 886,909,873,128.26/978,210.30
  6. Step 6: Final answer
    x = 906,665.85

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Similar ratio
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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.