Home / 739,210.24-1,020,110.72-399,678.72

Finding the Fourth Proportional to 739,210.24, 1,020,110.72 and 399,678.72

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Solution

The fourth proportional to 739,210.24, 1,020,110.72 and 399,678.72 is: 551,556.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,210.24 : 1,020,110.72 = 399,678.72 : x
  2. Step 2: Convert to fraction form
    739,210.24/1,020,110.72 = 399,678.72/x
  3. Step 3: Cross multiply
    739,210.24x = 1,020,110.72 × 399,678.72
  4. Step 4: Simplify right side
    739,210.24x = 407,716,546,827.88
  5. Step 5: Solve for x
    x = 407,716,546,827.88/739,210.24
  6. Step 6: Final answer
    x = 551,556.95

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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.