Home / 785,154.48-1,178,081.55-286,401.84

Finding the Fourth Proportional to 785,154.48, 1,178,081.55 and 286,401.84

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Solution

The fourth proportional to 785,154.48, 1,178,081.55 and 286,401.84 is: 429,730.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,154.48 : 1,178,081.55 = 286,401.84 : x
  2. Step 2: Convert to fraction form
    785,154.48/1,178,081.55 = 286,401.84/x
  3. Step 3: Cross multiply
    785,154.48x = 1,178,081.55 × 286,401.84
  4. Step 4: Simplify right side
    785,154.48x = 337,404,723,590.05
  5. Step 5: Solve for x
    x = 337,404,723,590.05/785,154.48
  6. Step 6: Final answer
    x = 429,730.37

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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.