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Finding the Fourth Proportional to 659,866.30, 989,831.85 and 344,938.30

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Solution

The fourth proportional to 659,866.30, 989,831.85 and 344,938.30 is: 517,424.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,866.30 : 989,831.85 = 344,938.30 : x
  2. Step 2: Convert to fraction form
    659,866.30/989,831.85 = 344,938.30/x
  3. Step 3: Cross multiply
    659,866.30x = 989,831.85 × 344,938.30
  4. Step 4: Simplify right side
    659,866.30x = 341,430,915,624.86
  5. Step 5: Solve for x
    x = 341,430,915,624.86/659,866.30
  6. Step 6: Final answer
    x = 517,424.39

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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.