Home / 677,039.83-934,280.25-390,542.83

Finding the Fourth Proportional to 677,039.83, 934,280.25 and 390,542.83

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Solution

The fourth proportional to 677,039.83, 934,280.25 and 390,542.83 is: 538,929.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,039.83 : 934,280.25 = 390,542.83 : x
  2. Step 2: Convert to fraction form
    677,039.83/934,280.25 = 390,542.83/x
  3. Step 3: Cross multiply
    677,039.83x = 934,280.25 × 390,542.83
  4. Step 4: Simplify right side
    677,039.83x = 364,876,452,848.11
  5. Step 5: Solve for x
    x = 364,876,452,848.11/677,039.83
  6. Step 6: Final answer
    x = 538,929.08

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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.