Home / 739,390.77-1,020,358.76-399,859.02

Finding the Fourth Proportional to 739,390.77, 1,020,358.76 and 399,859.02

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Solution

The fourth proportional to 739,390.77, 1,020,358.76 and 399,859.02 is: 551,805.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,390.77 : 1,020,358.76 = 399,859.02 : x
  2. Step 2: Convert to fraction form
    739,390.77/1,020,358.76 = 399,859.02/x
  3. Step 3: Cross multiply
    739,390.77x = 1,020,358.76 × 399,859.02
  4. Step 4: Simplify right side
    739,390.77x = 407,999,651,822.72
  5. Step 5: Solve for x
    x = 407,999,651,822.72/739,390.77
  6. Step 6: Final answer
    x = 551,805.17

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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.