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Finding the Fourth Proportional to 909,903.85, 1,364,363.70 and 377,478.70

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Solution

The fourth proportional to 909,903.85, 1,364,363.70 and 377,478.70 is: 566,013.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,903.85 : 1,364,363.70 = 377,478.70 : x
  2. Step 2: Convert to fraction form
    909,903.85/1,364,363.70 = 377,478.70/x
  3. Step 3: Cross multiply
    909,903.85x = 1,364,363.70 × 377,478.70
  4. Step 4: Simplify right side
    909,903.85x = 515,018,235,803.19
  5. Step 5: Solve for x
    x = 515,018,235,803.19/909,903.85
  6. Step 6: Final answer
    x = 566,013.91

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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.