Home / 718,053.41-990,970.67-395,820.83

Finding the Fourth Proportional to 718,053.41, 990,970.67 and 395,820.83

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Solution

The fourth proportional to 718,053.41, 990,970.67 and 395,820.83 is: 546,264.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,053.41 : 990,970.67 = 395,820.83 : x
  2. Step 2: Convert to fraction form
    718,053.41/990,970.67 = 395,820.83/x
  3. Step 3: Cross multiply
    718,053.41x = 990,970.67 × 395,820.83
  4. Step 4: Simplify right side
    718,053.41x = 392,246,829,139.76
  5. Step 5: Solve for x
    x = 392,246,829,139.76/718,053.41
  6. Step 6: Final answer
    x = 546,264.14

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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.