Home / 918,004.90-1,377,007.35-286,917.70

Finding the Fourth Proportional to 918,004.90, 1,377,007.35 and 286,917.70

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Solution

The fourth proportional to 918,004.90, 1,377,007.35 and 286,917.70 is: 430,376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,004.90 : 1,377,007.35 = 286,917.70 : x
  2. Step 2: Convert to fraction form
    918,004.90/1,377,007.35 = 286,917.70/x
  3. Step 3: Cross multiply
    918,004.90x = 1,377,007.35 × 286,917.70
  4. Step 4: Simplify right side
    918,004.90x = 395,087,781,745.10
  5. Step 5: Solve for x
    x = 395,087,781,745.10/918,004.90
  6. Step 6: Final answer
    x = 430,376.55

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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.