Home / 781,916.85-1,078,985.61-437,673.94

Finding the Fourth Proportional to 781,916.85, 1,078,985.61 and 437,673.94

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Solution

The fourth proportional to 781,916.85, 1,078,985.61 and 437,673.94 is: 603,956.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,916.85 : 1,078,985.61 = 437,673.94 : x
  2. Step 2: Convert to fraction form
    781,916.85/1,078,985.61 = 437,673.94/x
  3. Step 3: Cross multiply
    781,916.85x = 1,078,985.61 × 437,673.94
  4. Step 4: Simplify right side
    781,916.85x = 472,243,883,132.00
  5. Step 5: Solve for x
    x = 472,243,883,132.00/781,916.85
  6. Step 6: Final answer
    x = 603,956.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.