Home / 768,000.70-1,152,001.05-487,719.10

Finding the Fourth Proportional to 768,000.70, 1,152,001.05 and 487,719.10

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Solution

The fourth proportional to 768,000.70, 1,152,001.05 and 487,719.10 is: 731,578.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,000.70 : 1,152,001.05 = 487,719.10 : x
  2. Step 2: Convert to fraction form
    768,000.70/1,152,001.05 = 487,719.10/x
  3. Step 3: Cross multiply
    768,000.70x = 1,152,001.05 × 487,719.10
  4. Step 4: Simplify right side
    768,000.70x = 561,852,915,305.06
  5. Step 5: Solve for x
    x = 561,852,915,305.06/768,000.70
  6. Step 6: Final answer
    x = 731,578.65

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Similar ratio
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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.