Home / 719,070.88-992,316.60-396,780.72

Finding the Fourth Proportional to 719,070.88, 992,316.60 and 396,780.72

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Solution

The fourth proportional to 719,070.88, 992,316.60 and 396,780.72 is: 547,556.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,070.88 : 992,316.60 = 396,780.72 : x
  2. Step 2: Convert to fraction form
    719,070.88/992,316.60 = 396,780.72/x
  3. Step 3: Cross multiply
    719,070.88x = 992,316.60 × 396,780.72
  4. Step 4: Simplify right side
    719,070.88x = 393,732,095,015.95
  5. Step 5: Solve for x
    x = 393,732,095,015.95/719,070.88
  6. Step 6: Final answer
    x = 547,556.72

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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.