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Finding the Fourth Proportional to 559,937.40, 837,937.80 and 390,663.60

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Solution

The fourth proportional to 559,937.40, 837,937.80 and 390,663.60 is: 584,622.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,937.40 : 837,937.80 = 390,663.60 : x
  2. Step 2: Convert to fraction form
    559,937.40/837,937.80 = 390,663.60/x
  3. Step 3: Cross multiply
    559,937.40x = 837,937.80 × 390,663.60
  4. Step 4: Simplify right side
    559,937.40x = 327,351,797,524.08
  5. Step 5: Solve for x
    x = 327,351,797,524.08/559,937.40
  6. Step 6: Final answer
    x = 584,622.13

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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.