Home / 739,917.51-1,021,088.87-400,385.76

Finding the Fourth Proportional to 739,917.51, 1,021,088.87 and 400,385.76

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Solution

The fourth proportional to 739,917.51, 1,021,088.87 and 400,385.76 is: 552,533.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,917.51 : 1,021,088.87 = 400,385.76 : x
  2. Step 2: Convert to fraction form
    739,917.51/1,021,088.87 = 400,385.76/x
  3. Step 3: Cross multiply
    739,917.51x = 1,021,088.87 × 400,385.76
  4. Step 4: Simplify right side
    739,917.51x = 408,829,443,242.49
  5. Step 5: Solve for x
    x = 408,829,443,242.49/739,917.51
  6. Step 6: Final answer
    x = 552,533.81

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1.5x scale

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.