Home / 1,423,155.43-1,963,978.28-778,580.11

Finding the Fourth Proportional to 1,423,155.43, 1,963,978.28 and 778,580.11

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Solution

The fourth proportional to 1,423,155.43, 1,963,978.28 and 778,580.11 is: 1,074,453.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,155.43 : 1,963,978.28 = 778,580.11 : x
  2. Step 2: Convert to fraction form
    1,423,155.43/1,963,978.28 = 778,580.11/x
  3. Step 3: Cross multiply
    1,423,155.43x = 1,963,978.28 × 778,580.11
  4. Step 4: Simplify right side
    1,423,155.43x = 1,529,114,425,280.01
  5. Step 5: Solve for x
    x = 1,529,114,425,280.01/1,423,155.43
  6. Step 6: Final answer
    x = 1,074,453.56

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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.