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Finding the Fourth Proportional to 590,911.80, 885,330.90 and 485,158.20

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Solution

The fourth proportional to 590,911.80, 885,330.90 and 485,158.20 is: 726,886.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,911.80 : 885,330.90 = 485,158.20 : x
  2. Step 2: Convert to fraction form
    590,911.80/885,330.90 = 485,158.20/x
  3. Step 3: Cross multiply
    590,911.80x = 885,330.90 × 485,158.20
  4. Step 4: Simplify right side
    590,911.80x = 429,525,545,848.38
  5. Step 5: Solve for x
    x = 429,525,545,848.38/590,911.80
  6. Step 6: Final answer
    x = 726,886.05

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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.