Home / 671,410.10-1,005,041.55-390,091.70

Finding the Fourth Proportional to 671,410.10, 1,005,041.55 and 390,091.70

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Solution

The fourth proportional to 671,410.10, 1,005,041.55 and 390,091.70 is: 583,932.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,410.10 : 1,005,041.55 = 390,091.70 : x
  2. Step 2: Convert to fraction form
    671,410.10/1,005,041.55 = 390,091.70/x
  3. Step 3: Cross multiply
    671,410.10x = 1,005,041.55 × 390,091.70
  4. Step 4: Simplify right side
    671,410.10x = 392,058,366,810.14
  5. Step 5: Solve for x
    x = 392,058,366,810.14/671,410.10
  6. Step 6: Final answer
    x = 583,932.78

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.