Home / 538,943.74-743,794.95-402,741.21

Finding the Fourth Proportional to 538,943.74, 743,794.95 and 402,741.21

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Solution

The fourth proportional to 538,943.74, 743,794.95 and 402,741.21 is: 555,822.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,943.74 : 743,794.95 = 402,741.21 : x
  2. Step 2: Convert to fraction form
    538,943.74/743,794.95 = 402,741.21/x
  3. Step 3: Cross multiply
    538,943.74x = 743,794.95 × 402,741.21
  4. Step 4: Simplify right side
    538,943.74x = 299,556,878,154.89
  5. Step 5: Solve for x
    x = 299,556,878,154.89/538,943.74
  6. Step 6: Final answer
    x = 555,822.17

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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.