Home / 677,038.83-934,278.87-390,541.83

Finding the Fourth Proportional to 677,038.83, 934,278.87 and 390,541.83

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Solution

The fourth proportional to 677,038.83, 934,278.87 and 390,541.83 is: 538,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,038.83 : 934,278.87 = 390,541.83 : x
  2. Step 2: Convert to fraction form
    677,038.83/934,278.87 = 390,541.83/x
  3. Step 3: Cross multiply
    677,038.83x = 934,278.87 × 390,541.83
  4. Step 4: Simplify right side
    677,038.83x = 364,874,979,620.13
  5. Step 5: Solve for x
    x = 364,874,979,620.13/677,038.83
  6. Step 6: Final answer
    x = 538,927.70

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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.