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Finding the Fourth Proportional to 590,710.80, 886,503.60 and 390,964.80

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Solution

The fourth proportional to 590,710.80, 886,503.60 and 390,964.80 is: 586,736.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,710.80 : 886,503.60 = 390,964.80 : x
  2. Step 2: Convert to fraction form
    590,710.80/886,503.60 = 390,964.80/x
  3. Step 3: Cross multiply
    590,710.80x = 886,503.60 × 390,964.80
  4. Step 4: Simplify right side
    590,710.80x = 346,591,702,673.28
  5. Step 5: Solve for x
    x = 346,591,702,673.28/590,710.80
  6. Step 6: Final answer
    x = 586,736.70

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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.