Home / 718,292.23-991,213.40-391,598.17

Finding the Fourth Proportional to 718,292.23, 991,213.40 and 391,598.17

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Solution

The fourth proportional to 718,292.23, 991,213.40 and 391,598.17 is: 540,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,292.23 : 991,213.40 = 391,598.17 : x
  2. Step 2: Convert to fraction form
    718,292.23/991,213.40 = 391,598.17/x
  3. Step 3: Cross multiply
    718,292.23x = 991,213.40 × 391,598.17
  4. Step 4: Simplify right side
    718,292.23x = 388,157,353,519.48
  5. Step 5: Solve for x
    x = 388,157,353,519.48/718,292.23
  6. Step 6: Final answer
    x = 540,389.19

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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.