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Finding the Fourth Proportional to 437,535.60, 656,303.40 and 391,916.40

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Solution

The fourth proportional to 437,535.60, 656,303.40 and 391,916.40 is: 587,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,535.60 : 656,303.40 = 391,916.40 : x
  2. Step 2: Convert to fraction form
    437,535.60/656,303.40 = 391,916.40/x
  3. Step 3: Cross multiply
    437,535.60x = 656,303.40 × 391,916.40
  4. Step 4: Simplify right side
    437,535.60x = 257,216,065,835.76
  5. Step 5: Solve for x
    x = 257,216,065,835.76/437,535.60
  6. Step 6: Final answer
    x = 587,874.60

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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.