Home / 743,117.81-1,025,565.82-420,885.23

Finding the Fourth Proportional to 743,117.81, 1,025,565.82 and 420,885.23

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Solution

The fourth proportional to 743,117.81, 1,025,565.82 and 420,885.23 is: 580,857.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,117.81 : 1,025,565.82 = 420,885.23 : x
  2. Step 2: Convert to fraction form
    743,117.81/1,025,565.82 = 420,885.23/x
  3. Step 3: Cross multiply
    743,117.81x = 1,025,565.82 × 420,885.23
  4. Step 4: Simplify right side
    743,117.81x = 431,645,506,030.84
  5. Step 5: Solve for x
    x = 431,645,506,030.84/743,117.81
  6. Step 6: Final answer
    x = 580,857.44

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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.