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Finding the Fourth Proportional to 672,206.76, 927,690.28 and 370,400.76

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Solution

The fourth proportional to 672,206.76, 927,690.28 and 370,400.76 is: 511,177.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,206.76 : 927,690.28 = 370,400.76 : x
  2. Step 2: Convert to fraction form
    672,206.76/927,690.28 = 370,400.76/x
  3. Step 3: Cross multiply
    672,206.76x = 927,690.28 × 370,400.76
  4. Step 4: Simplify right side
    672,206.76x = 343,617,184,756.61
  5. Step 5: Solve for x
    x = 343,617,184,756.61/672,206.76
  6. Step 6: Final answer
    x = 511,177.82

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Double scale
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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.